diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87f9cfc420..7571de83df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 #### :nail_care: Polish
 
 - Format docstrings. https://github.com/rescript-lang/rescript-compiler/pull/6417
+- JSX v4 automatic mode as the default mode https://github.com/rescript-lang/rescript-compiler/pull/6552
 
 # 11.0.0-rc.8
 
diff --git a/docs/JSXV4.md b/docs/JSXV4.md
index f6fcbe7f3f..ce69c4e00c 100644
--- a/docs/JSXV4.md
+++ b/docs/JSXV4.md
@@ -43,7 +43,7 @@ Another example is a V4 project that also uses `"rescript-react-native", "rescri
 
 ### Classic and Automatic Mode
 
-Classic mode is the default and generates calls to `React.createElement` just as with V3.
+Classic mode generates calls to `React.createElement` just as with V3.
 
 ```json
 "jsx": {
@@ -52,7 +52,7 @@ Classic mode is the default and generates calls to `React.createElement` just as
 }
 ```
 
-Automatic mode is an experimental mode that generate calls to `_jsx` functions (similar to TypeScript's `react-jsx` mode)
+Automatic mode is the default and generates calls to `_jsx` functions (similar to TypeScript's `react-jsx` mode)
 
 ```json
 "jsx": {
diff --git a/jscomp/common/js_config.ml b/jscomp/common/js_config.ml
index 0b479fa4a7..ef3ad90b60 100644
--- a/jscomp/common/js_config.ml
+++ b/jscomp/common/js_config.ml
@@ -51,7 +51,7 @@ let force_cmi = ref false
 let force_cmj = ref false
 let jsx_version = ref None
 let jsx_module = ref React
-let jsx_mode = ref Classic
+let jsx_mode = ref Automatic
 let js_stdout = ref true
 let all_module_aliases = ref false
 let no_stdlib = ref false
diff --git a/jscomp/gentype/ImportPath.mli b/jscomp/gentype/ImportPath.mli
index 5f319d00bc..740e629f9a 100644
--- a/jscomp/gentype/ImportPath.mli
+++ b/jscomp/gentype/ImportPath.mli
@@ -3,7 +3,7 @@ open GenTypeCommon
 type t
 
 val bsCurryPath : config:Config.t -> t
-val chopExtensionSafe : t -> t
+val chopExtensionSafe : t -> t [@@live]
 val dump : t -> string
 val emit : t -> string
 val fromModule : dir:string -> importExtension:string -> ModuleName.t -> t
diff --git a/jscomp/syntax/cli/res_cli.ml b/jscomp/syntax/cli/res_cli.ml
index 224dec9073..bcc4024259 100644
--- a/jscomp/syntax/cli/res_cli.ml
+++ b/jscomp/syntax/cli/res_cli.ml
@@ -177,7 +177,7 @@ end = struct
   let interface = ref false
   let jsxVersion = ref (-1)
   let jsxModule = ref "react"
-  let jsxMode = ref "classic"
+  let jsxMode = ref "automatic"
   let file = ref ""
   let typechecker = ref false
 
@@ -215,7 +215,7 @@ end = struct
         "Specify the jsx module. Default: react" );
       ( "-jsx-mode",
         Arg.String (fun txt -> jsxMode := txt),
-        "Specify the jsx mode, classic or automatic. Default: classic" );
+        "Specify the jsx mode, classic or automatic. Default: automatic" );
       ( "-typechecker",
         Arg.Unit (fun () -> typechecker := true),
         "Parses the ast as it would be passed to the typechecker and not the \