From 8f3de9c412ff23a854b4f3f84cae4903aa813b72 Mon Sep 17 00:00:00 2001
From: Tim Hockin <thockin@google.com>
Date: Sun, 25 Jun 2017 10:29:48 -0700
Subject: [PATCH] Adapt tests to use new Config structs

the unit test uses compatible mode.  The benchmarks measure compat,
default, and fastest.

This still fails for strings and slices and maps all over the place.
---
 output_tests/builtins/bool/json_test.go       | 107 +++++++++---------
 output_tests/builtins/bool_alias/json_test.go | 107 +++++++++---------
 output_tests/builtins/byte/json_test.go       | 107 +++++++++---------
 output_tests/builtins/byte_alias/json_test.go | 107 +++++++++---------
 output_tests/builtins/float32/json_test.go    | 107 +++++++++---------
 .../builtins/float32_alias/json_test.go       | 107 +++++++++---------
 output_tests/builtins/float64/json_test.go    | 107 +++++++++---------
 .../builtins/float64_alias/json_test.go       | 107 +++++++++---------
 output_tests/builtins/int16/json_test.go      | 107 +++++++++---------
 .../builtins/int16_alias/json_test.go         | 107 +++++++++---------
 output_tests/builtins/int32/json_test.go      | 107 +++++++++---------
 .../builtins/int32_alias/json_test.go         | 107 +++++++++---------
 output_tests/builtins/int8/json_test.go       | 107 +++++++++---------
 output_tests/builtins/int8_alias/json_test.go | 107 +++++++++---------
 output_tests/builtins/string/json_test.go     | 107 +++++++++---------
 .../builtins/string_alias/json_test.go        | 107 +++++++++---------
 output_tests/builtins/uint16/json_test.go     | 107 +++++++++---------
 .../builtins/uint16_alias/json_test.go        | 107 +++++++++---------
 output_tests/builtins/uint32/json_test.go     | 107 +++++++++---------
 .../builtins/uint32_alias/json_test.go        | 107 +++++++++---------
 output_tests/builtins/uint8/json_test.go      | 107 +++++++++---------
 .../builtins/uint8_alias/json_test.go         | 107 +++++++++---------
 .../maps/builtins/int32/bool/json_test.go     | 107 +++++++++---------
 .../maps/builtins/int32/byte/json_test.go     | 107 +++++++++---------
 .../maps/builtins/int32/float32/json_test.go  | 107 +++++++++---------
 .../maps/builtins/int32/float64/json_test.go  | 107 +++++++++---------
 .../maps/builtins/int32/int32/json_test.go    | 107 +++++++++---------
 .../maps/builtins/int32/int8/json_test.go     | 107 +++++++++---------
 .../maps/builtins/int32/string/json_test.go   | 107 +++++++++---------
 .../builtins/int32/string_alias/json_test.go  | 107 +++++++++---------
 .../maps/builtins/int32/uint8/json_test.go    | 107 +++++++++---------
 .../maps/builtins/string/bool/json_test.go    | 107 +++++++++---------
 .../maps/builtins/string/byte/json_test.go    | 107 +++++++++---------
 .../maps/builtins/string/float32/json_test.go | 107 +++++++++---------
 .../maps/builtins/string/float64/json_test.go | 107 +++++++++---------
 .../maps/builtins/string/int32/json_test.go   | 107 +++++++++---------
 .../maps/builtins/string/int8/json_test.go    | 107 +++++++++---------
 .../maps/builtins/string/string/json_test.go  | 107 +++++++++---------
 .../builtins/string/string_alias/json_test.go | 107 +++++++++---------
 .../maps/builtins/string/uint8/json_test.go   | 107 +++++++++---------
 .../builtins/string_alias/bool/json_test.go   | 107 +++++++++---------
 .../builtins/string_alias/byte/json_test.go   | 107 +++++++++---------
 .../string_alias/float32/json_test.go         | 107 +++++++++---------
 .../string_alias/float64/json_test.go         | 107 +++++++++---------
 .../builtins/string_alias/int32/json_test.go  | 107 +++++++++---------
 .../builtins/string_alias/int8/json_test.go   | 107 +++++++++---------
 .../builtins/string_alias/string/json_test.go | 107 +++++++++---------
 .../string_alias/string_alias/json_test.go    | 107 +++++++++---------
 .../builtins/string_alias/uint8/json_test.go  | 107 +++++++++---------
 .../maps/builtins/uint8/bool/json_test.go     | 107 +++++++++---------
 .../maps/builtins/uint8/byte/json_test.go     | 107 +++++++++---------
 .../maps/builtins/uint8/float32/json_test.go  | 107 +++++++++---------
 .../maps/builtins/uint8/float64/json_test.go  | 107 +++++++++---------
 .../maps/builtins/uint8/int32/json_test.go    | 107 +++++++++---------
 .../maps/builtins/uint8/int8/json_test.go     | 107 +++++++++---------
 .../maps/builtins/uint8/string/json_test.go   | 107 +++++++++---------
 .../builtins/uint8/string_alias/json_test.go  | 107 +++++++++---------
 .../maps/builtins/uint8/uint8/json_test.go    | 107 +++++++++---------
 .../maps/pointers/int16/ptr_bool/json_test.go | 107 +++++++++---------
 .../pointers/int16/ptr_float64/json_test.go   | 107 +++++++++---------
 .../pointers/int16/ptr_int32/json_test.go     | 107 +++++++++---------
 .../pointers/int16/ptr_string/json_test.go    | 107 +++++++++---------
 .../pointers/int16/ptr_uint8/json_test.go     | 107 +++++++++---------
 .../pointers/string/ptr_bool/json_test.go     | 107 +++++++++---------
 .../pointers/string/ptr_float64/json_test.go  | 107 +++++++++---------
 .../pointers/string/ptr_int32/json_test.go    | 107 +++++++++---------
 .../pointers/string/ptr_string/json_test.go   | 107 +++++++++---------
 .../pointers/string/ptr_uint8/json_test.go    | 107 +++++++++---------
 .../pointers/uint16/ptr_bool/json_test.go     | 107 +++++++++---------
 .../pointers/uint16/ptr_float64/json_test.go  | 107 +++++++++---------
 .../pointers/uint16/ptr_int32/json_test.go    | 107 +++++++++---------
 .../pointers/uint16/ptr_string/json_test.go   | 107 +++++++++---------
 .../pointers/uint16/ptr_uint8/json_test.go    | 107 +++++++++---------
 .../slices/builtins/bool/json_test.go         | 107 +++++++++---------
 .../slices/builtins/byte/json_test.go         | 107 +++++++++---------
 .../slices/builtins/float32/json_test.go      | 107 +++++++++---------
 .../slices/builtins/float64/json_test.go      | 107 +++++++++---------
 .../slices/builtins/int32/json_test.go        | 107 +++++++++---------
 .../slices/builtins/int8/json_test.go         | 107 +++++++++---------
 .../slices/builtins/string/json_test.go       | 107 +++++++++---------
 .../slices/builtins/uint8/json_test.go        | 107 +++++++++---------
 .../slices/pointers/bool/json_test.go         | 107 +++++++++---------
 .../slices/pointers/float32/json_test.go      | 107 +++++++++---------
 .../slices/pointers/float64/json_test.go      | 107 +++++++++---------
 .../slices/pointers/int32/json_test.go        | 107 +++++++++---------
 .../slices/pointers/int8/json_test.go         | 107 +++++++++---------
 .../slices/pointers/string/json_test.go       | 107 +++++++++---------
 87 files changed, 4437 insertions(+), 4872 deletions(-)

diff --git a/output_tests/builtins/bool/json_test.go b/output_tests/builtins/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/bool/json_test.go
+++ b/output_tests/builtins/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/bool_alias/json_test.go b/output_tests/builtins/bool_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/bool_alias/json_test.go
+++ b/output_tests/builtins/bool_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/byte/json_test.go b/output_tests/builtins/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/byte/json_test.go
+++ b/output_tests/builtins/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/byte_alias/json_test.go b/output_tests/builtins/byte_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/byte_alias/json_test.go
+++ b/output_tests/builtins/byte_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/float32/json_test.go b/output_tests/builtins/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/float32/json_test.go
+++ b/output_tests/builtins/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/float32_alias/json_test.go b/output_tests/builtins/float32_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/float32_alias/json_test.go
+++ b/output_tests/builtins/float32_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/float64/json_test.go b/output_tests/builtins/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/float64/json_test.go
+++ b/output_tests/builtins/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/float64_alias/json_test.go b/output_tests/builtins/float64_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/float64_alias/json_test.go
+++ b/output_tests/builtins/float64_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int16/json_test.go b/output_tests/builtins/int16/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int16/json_test.go
+++ b/output_tests/builtins/int16/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int16_alias/json_test.go b/output_tests/builtins/int16_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int16_alias/json_test.go
+++ b/output_tests/builtins/int16_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int32/json_test.go b/output_tests/builtins/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int32/json_test.go
+++ b/output_tests/builtins/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int32_alias/json_test.go b/output_tests/builtins/int32_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int32_alias/json_test.go
+++ b/output_tests/builtins/int32_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int8/json_test.go b/output_tests/builtins/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int8/json_test.go
+++ b/output_tests/builtins/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/int8_alias/json_test.go b/output_tests/builtins/int8_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/int8_alias/json_test.go
+++ b/output_tests/builtins/int8_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/string/json_test.go b/output_tests/builtins/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/string/json_test.go
+++ b/output_tests/builtins/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/string_alias/json_test.go b/output_tests/builtins/string_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/string_alias/json_test.go
+++ b/output_tests/builtins/string_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint16/json_test.go b/output_tests/builtins/uint16/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint16/json_test.go
+++ b/output_tests/builtins/uint16/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint16_alias/json_test.go b/output_tests/builtins/uint16_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint16_alias/json_test.go
+++ b/output_tests/builtins/uint16_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint32/json_test.go b/output_tests/builtins/uint32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint32/json_test.go
+++ b/output_tests/builtins/uint32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint32_alias/json_test.go b/output_tests/builtins/uint32_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint32_alias/json_test.go
+++ b/output_tests/builtins/uint32_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint8/json_test.go b/output_tests/builtins/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint8/json_test.go
+++ b/output_tests/builtins/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/builtins/uint8_alias/json_test.go b/output_tests/builtins/uint8_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/builtins/uint8_alias/json_test.go
+++ b/output_tests/builtins/uint8_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/bool/json_test.go b/output_tests/maps/builtins/int32/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/bool/json_test.go
+++ b/output_tests/maps/builtins/int32/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/byte/json_test.go b/output_tests/maps/builtins/int32/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/byte/json_test.go
+++ b/output_tests/maps/builtins/int32/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/float32/json_test.go b/output_tests/maps/builtins/int32/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/float32/json_test.go
+++ b/output_tests/maps/builtins/int32/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/float64/json_test.go b/output_tests/maps/builtins/int32/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/float64/json_test.go
+++ b/output_tests/maps/builtins/int32/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/int32/json_test.go b/output_tests/maps/builtins/int32/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/int32/json_test.go
+++ b/output_tests/maps/builtins/int32/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/int8/json_test.go b/output_tests/maps/builtins/int32/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/int8/json_test.go
+++ b/output_tests/maps/builtins/int32/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/string/json_test.go b/output_tests/maps/builtins/int32/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/string/json_test.go
+++ b/output_tests/maps/builtins/int32/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/string_alias/json_test.go b/output_tests/maps/builtins/int32/string_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/string_alias/json_test.go
+++ b/output_tests/maps/builtins/int32/string_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/int32/uint8/json_test.go b/output_tests/maps/builtins/int32/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/int32/uint8/json_test.go
+++ b/output_tests/maps/builtins/int32/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/bool/json_test.go b/output_tests/maps/builtins/string/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/bool/json_test.go
+++ b/output_tests/maps/builtins/string/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/byte/json_test.go b/output_tests/maps/builtins/string/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/byte/json_test.go
+++ b/output_tests/maps/builtins/string/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/float32/json_test.go b/output_tests/maps/builtins/string/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/float32/json_test.go
+++ b/output_tests/maps/builtins/string/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/float64/json_test.go b/output_tests/maps/builtins/string/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/float64/json_test.go
+++ b/output_tests/maps/builtins/string/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/int32/json_test.go b/output_tests/maps/builtins/string/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/int32/json_test.go
+++ b/output_tests/maps/builtins/string/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/int8/json_test.go b/output_tests/maps/builtins/string/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/int8/json_test.go
+++ b/output_tests/maps/builtins/string/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/string/json_test.go b/output_tests/maps/builtins/string/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/string/json_test.go
+++ b/output_tests/maps/builtins/string/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/string_alias/json_test.go b/output_tests/maps/builtins/string/string_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/string_alias/json_test.go
+++ b/output_tests/maps/builtins/string/string_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string/uint8/json_test.go b/output_tests/maps/builtins/string/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string/uint8/json_test.go
+++ b/output_tests/maps/builtins/string/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/bool/json_test.go b/output_tests/maps/builtins/string_alias/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/bool/json_test.go
+++ b/output_tests/maps/builtins/string_alias/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/byte/json_test.go b/output_tests/maps/builtins/string_alias/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/byte/json_test.go
+++ b/output_tests/maps/builtins/string_alias/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/float32/json_test.go b/output_tests/maps/builtins/string_alias/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/float32/json_test.go
+++ b/output_tests/maps/builtins/string_alias/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/float64/json_test.go b/output_tests/maps/builtins/string_alias/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/float64/json_test.go
+++ b/output_tests/maps/builtins/string_alias/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/int32/json_test.go b/output_tests/maps/builtins/string_alias/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/int32/json_test.go
+++ b/output_tests/maps/builtins/string_alias/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/int8/json_test.go b/output_tests/maps/builtins/string_alias/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/int8/json_test.go
+++ b/output_tests/maps/builtins/string_alias/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/string/json_test.go b/output_tests/maps/builtins/string_alias/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/string/json_test.go
+++ b/output_tests/maps/builtins/string_alias/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/string_alias/json_test.go b/output_tests/maps/builtins/string_alias/string_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/string_alias/json_test.go
+++ b/output_tests/maps/builtins/string_alias/string_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/string_alias/uint8/json_test.go b/output_tests/maps/builtins/string_alias/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/string_alias/uint8/json_test.go
+++ b/output_tests/maps/builtins/string_alias/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/bool/json_test.go b/output_tests/maps/builtins/uint8/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/bool/json_test.go
+++ b/output_tests/maps/builtins/uint8/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/byte/json_test.go b/output_tests/maps/builtins/uint8/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/byte/json_test.go
+++ b/output_tests/maps/builtins/uint8/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/float32/json_test.go b/output_tests/maps/builtins/uint8/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/float32/json_test.go
+++ b/output_tests/maps/builtins/uint8/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/float64/json_test.go b/output_tests/maps/builtins/uint8/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/float64/json_test.go
+++ b/output_tests/maps/builtins/uint8/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/int32/json_test.go b/output_tests/maps/builtins/uint8/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/int32/json_test.go
+++ b/output_tests/maps/builtins/uint8/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/int8/json_test.go b/output_tests/maps/builtins/uint8/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/int8/json_test.go
+++ b/output_tests/maps/builtins/uint8/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/string/json_test.go b/output_tests/maps/builtins/uint8/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/string/json_test.go
+++ b/output_tests/maps/builtins/uint8/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/string_alias/json_test.go b/output_tests/maps/builtins/uint8/string_alias/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/string_alias/json_test.go
+++ b/output_tests/maps/builtins/uint8/string_alias/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/builtins/uint8/uint8/json_test.go b/output_tests/maps/builtins/uint8/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/builtins/uint8/uint8/json_test.go
+++ b/output_tests/maps/builtins/uint8/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/int16/ptr_bool/json_test.go b/output_tests/maps/pointers/int16/ptr_bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/int16/ptr_bool/json_test.go
+++ b/output_tests/maps/pointers/int16/ptr_bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/int16/ptr_float64/json_test.go b/output_tests/maps/pointers/int16/ptr_float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/int16/ptr_float64/json_test.go
+++ b/output_tests/maps/pointers/int16/ptr_float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/int16/ptr_int32/json_test.go b/output_tests/maps/pointers/int16/ptr_int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/int16/ptr_int32/json_test.go
+++ b/output_tests/maps/pointers/int16/ptr_int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/int16/ptr_string/json_test.go b/output_tests/maps/pointers/int16/ptr_string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/int16/ptr_string/json_test.go
+++ b/output_tests/maps/pointers/int16/ptr_string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/int16/ptr_uint8/json_test.go b/output_tests/maps/pointers/int16/ptr_uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/int16/ptr_uint8/json_test.go
+++ b/output_tests/maps/pointers/int16/ptr_uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/string/ptr_bool/json_test.go b/output_tests/maps/pointers/string/ptr_bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/string/ptr_bool/json_test.go
+++ b/output_tests/maps/pointers/string/ptr_bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/string/ptr_float64/json_test.go b/output_tests/maps/pointers/string/ptr_float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/string/ptr_float64/json_test.go
+++ b/output_tests/maps/pointers/string/ptr_float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/string/ptr_int32/json_test.go b/output_tests/maps/pointers/string/ptr_int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/string/ptr_int32/json_test.go
+++ b/output_tests/maps/pointers/string/ptr_int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/string/ptr_string/json_test.go b/output_tests/maps/pointers/string/ptr_string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/string/ptr_string/json_test.go
+++ b/output_tests/maps/pointers/string/ptr_string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/string/ptr_uint8/json_test.go b/output_tests/maps/pointers/string/ptr_uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/string/ptr_uint8/json_test.go
+++ b/output_tests/maps/pointers/string/ptr_uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/uint16/ptr_bool/json_test.go b/output_tests/maps/pointers/uint16/ptr_bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/uint16/ptr_bool/json_test.go
+++ b/output_tests/maps/pointers/uint16/ptr_bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/uint16/ptr_float64/json_test.go b/output_tests/maps/pointers/uint16/ptr_float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/uint16/ptr_float64/json_test.go
+++ b/output_tests/maps/pointers/uint16/ptr_float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/uint16/ptr_int32/json_test.go b/output_tests/maps/pointers/uint16/ptr_int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/uint16/ptr_int32/json_test.go
+++ b/output_tests/maps/pointers/uint16/ptr_int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/uint16/ptr_string/json_test.go b/output_tests/maps/pointers/uint16/ptr_string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/uint16/ptr_string/json_test.go
+++ b/output_tests/maps/pointers/uint16/ptr_string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/maps/pointers/uint16/ptr_uint8/json_test.go b/output_tests/maps/pointers/uint16/ptr_uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/maps/pointers/uint16/ptr_uint8/json_test.go
+++ b/output_tests/maps/pointers/uint16/ptr_uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/bool/json_test.go b/output_tests/slices/builtins/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/bool/json_test.go
+++ b/output_tests/slices/builtins/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/byte/json_test.go b/output_tests/slices/builtins/byte/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/byte/json_test.go
+++ b/output_tests/slices/builtins/byte/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/float32/json_test.go b/output_tests/slices/builtins/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/float32/json_test.go
+++ b/output_tests/slices/builtins/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/float64/json_test.go b/output_tests/slices/builtins/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/float64/json_test.go
+++ b/output_tests/slices/builtins/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/int32/json_test.go b/output_tests/slices/builtins/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/int32/json_test.go
+++ b/output_tests/slices/builtins/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/int8/json_test.go b/output_tests/slices/builtins/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/int8/json_test.go
+++ b/output_tests/slices/builtins/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/string/json_test.go b/output_tests/slices/builtins/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/string/json_test.go
+++ b/output_tests/slices/builtins/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/builtins/uint8/json_test.go b/output_tests/slices/builtins/uint8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/builtins/uint8/json_test.go
+++ b/output_tests/slices/builtins/uint8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/bool/json_test.go b/output_tests/slices/pointers/bool/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/bool/json_test.go
+++ b/output_tests/slices/pointers/bool/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/float32/json_test.go b/output_tests/slices/pointers/float32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/float32/json_test.go
+++ b/output_tests/slices/pointers/float32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/float64/json_test.go b/output_tests/slices/pointers/float64/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/float64/json_test.go
+++ b/output_tests/slices/pointers/float64/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/int32/json_test.go b/output_tests/slices/pointers/int32/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/int32/json_test.go
+++ b/output_tests/slices/pointers/int32/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/int8/json_test.go b/output_tests/slices/pointers/int8/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/int8/json_test.go
+++ b/output_tests/slices/pointers/int8/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }
diff --git a/output_tests/slices/pointers/string/json_test.go b/output_tests/slices/pointers/string/json_test.go
index f678ec9..a7b1d0d 100644
--- a/output_tests/slices/pointers/string/json_test.go
+++ b/output_tests/slices/pointers/string/json_test.go
@@ -20,7 +20,7 @@ func Test_Roundtrip(t *testing.T) {
 		if err != nil {
 			t.Errorf("failed to marshal with stdlib: %v", err)
 		}
-		jbIter, err := jsoniter.Marshal(before)
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
 		if err != nil {
 			t.Errorf("failed to marshal with jsoniter: %v", err)
 		}
@@ -35,7 +35,7 @@ func Test_Roundtrip(t *testing.T) {
 			t.Errorf("failed to unmarshal with stdlib: %v", err)
 		}
 		var afterIter T
-		err = jsoniter.Unmarshal(jbIter, &afterIter)
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
 		if err != nil {
 			t.Errorf("failed to unmarshal with jsoniter: %v", err)
 		}
@@ -69,7 +69,7 @@ func indent(src []byte, prefix string) string {
 	return buf.String()
 }
 
-func BenchmarkStandardMarshal(t *testing.B) {
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
 	t.ReportAllocs()
 	t.ResetTimer()
 
@@ -77,68 +77,63 @@ func BenchmarkStandardMarshal(t *testing.B) {
 	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
 	fz.Fuzz(&obj)
 	for i := 0; i < t.N; i++ {
-		jb, err := json.Marshal(obj)
+		jb, err := fn(obj)
 		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
 		}
 		_ = jb
 	}
 }
 
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before T
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after T
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
 func BenchmarkStandardUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = json.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
 }
 
-func BenchmarkJSONIterMarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var obj T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&obj)
-	for i := 0; i < t.N; i++ {
-		jb, err := jsoniter.Marshal(obj)
-		if err != nil {
-			t.Fatalf("failed to marshal:\n input: %s\n  error: %v", dump(obj), err)
-		}
-		_ = jb
-	}
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
 }
 
-func BenchmarkJSONIterUnmarshal(t *testing.B) {
-	t.ReportAllocs()
-	t.ResetTimer()
-
-	var before T
-	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
-	fz.Fuzz(&before)
-	jb, err := json.Marshal(before)
-	if err != nil {
-		t.Fatalf("failed to marshal: %v", err)
-	}
-
-	for i := 0; i < t.N; i++ {
-		var after T
-		err = jsoniter.Unmarshal(jb, &after)
-		if err != nil {
-			t.Fatalf("failed to unmarshal:\n  input: %q\n  error: %v", string(jb), err)
-		}
-	}
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
 }