diff --git a/fastapi/_compat/__init__.py b/fastapi/_compat/__init__.py
index 0aadd68de..fd1df8c6a 100644
--- a/fastapi/_compat/__init__.py
+++ b/fastapi/_compat/__init__.py
@@ -11,7 +11,6 @@ from .main import _is_model_class as _is_model_class
 from .main import _is_model_field as _is_model_field
 from .main import _is_undefined as _is_undefined
 from .main import _model_dump as _model_dump
-from .main import _model_rebuild as _model_rebuild
 from .main import copy_field_info as copy_field_info
 from .main import create_body_model as create_body_model
 from .main import evaluate_forwardref as evaluate_forwardref
diff --git a/fastapi/_compat/main.py b/fastapi/_compat/main.py
index c9aa465cf..652b461a6 100644
--- a/fastapi/_compat/main.py
+++ b/fastapi/_compat/main.py
@@ -158,15 +158,6 @@ def serialize_sequence_value(*, field: ModelField, value: Any) -> Sequence[Any]:
     return v2.serialize_sequence_value(field=field, value=value)  # type: ignore[arg-type]
 
 
-def _model_rebuild(model: type[BaseModel]) -> None:
-    if lenient_issubclass(model, may_v1.BaseModel):
-        from fastapi._compat import v1
-
-        v1._model_rebuild(model)
-    else:
-        v2._model_rebuild(model)
-
-
 def get_compat_model_name_map(fields: list[ModelField]) -> ModelNameMap:
     v1_model_fields = [
         field for field in fields if isinstance(field, may_v1.ModelField)
diff --git a/fastapi/_compat/v2.py b/fastapi/_compat/v2.py
index c4fa49e40..cbcb98e1a 100644
--- a/fastapi/_compat/v2.py
+++ b/fastapi/_compat/v2.py
@@ -216,10 +216,6 @@ def get_annotation_from_field_info(
     return annotation
 
 
-def _model_rebuild(model: type[BaseModel]) -> None:
-    model.model_rebuild()
-
-
 def _model_dump(
     model: BaseModel, mode: Literal["json", "python"] = "json", **kwargs: Any
 ) -> Any:
diff --git a/fastapi/openapi/models.py b/fastapi/openapi/models.py
index e60f48b4c..276365990 100644
--- a/fastapi/openapi/models.py
+++ b/fastapi/openapi/models.py
@@ -6,7 +6,6 @@ from fastapi._compat import (
     CoreSchema,
     GetJsonSchemaHandler,
     JsonSchemaValue,
-    _model_rebuild,
     with_info_plain_validator_function,
 )
 from fastapi.logger import logger
@@ -434,6 +433,6 @@ class OpenAPI(BaseModelWithConfig):
     externalDocs: Optional[ExternalDocumentation] = None
 
 
-_model_rebuild(Schema)
-_model_rebuild(Operation)
-_model_rebuild(Encoding)
+Schema.model_rebuild()
+Operation.model_rebuild()
+Encoding.model_rebuild()