diff --git a/g4f/client/async.py b/g4f/client/async.py
index 1ac738fd..76e410fc 100644
--- a/g4f/client/async.py
+++ b/g4f/client/async.py
@@ -14,9 +14,9 @@ from ..image import ImageResponse as ImageProviderResponse
 from ..errors import NoImageResponseError, RateLimitError, MissingAuthError
 from .. import get_model_and_provider, get_last_provider
 from .helper import read_json, find_stop, filter_none
-
+ä
 async def iter_response(
-    response: AsyncIerator[str],
+    response: AsyncIterator[str],
     stream: bool,
     response_format: dict = None,
     max_tokens: int = None,
@@ -67,6 +67,39 @@ class Client(BaseClient):
         self.chat: Chat = Chat(self, provider)
         self.images: Images = Images(self, image_provider)
 
+async def cast_iter_async(iter):
+    for chunk in iter:
+        yield chunk
+
+def create_response(
+    messages: Messages,
+    model: str,
+    provider: ProviderType = None,
+    stream: bool = False,
+    response_format: dict = None,
+    max_tokens: int = None,
+    stop: Union[list[str], str] = None,
+    api_key: str = None,
+    **kwargs
+):
+    if hasattr(provider, "create_async_generator):
+        create = provider.create_async_generator
+    else:
+        create = provider.create_completion
+    response = create(
+        model, messages, stream,            
+        **filter_none(
+            proxy=self.client.get_proxy(),
+            max_tokens=max_tokens,
+            stop=stop,
+            api_key=self.client.api_key if api_key is None else api_key
+        ),
+        **kwargs
+    )
+    if not hasattr(provider, "create_async_generator")
+        response = cast_iter_async(response)
+    return response
+
 class Completions():
     def __init__(self, client: Client, provider: ProviderType = None):
         self.client: Client = client
@@ -79,9 +112,6 @@ class Completions():
         provider: ProviderType = None,
         stream: bool = False,
         response_format: dict = None,
-        max_tokens: int = None,
-        stop: Union[list[str], str] = None,
-        api_key: str = None,
         ignored  : list[str] = None,
         ignore_working: bool = False,
         ignore_stream: bool = False,
@@ -97,16 +127,7 @@ class Completions():
             **kwargs
         )
         stop = [stop] if isinstance(stop, str) else stop
-        response = provider.create_async(
-            model, messages, stream,            
-            **filter_none(
-                proxy=self.client.get_proxy(),
-                max_tokens=max_tokens,
-                stop=stop,
-                api_key=self.client.api_key if api_key is None else api_key
-            ),
-            **kwargs
-        )
+        response = create_response(messages, model, provider, stream, **kwargs)
         response = iter_response(response, stream, response_format, max_tokens, stop)
         response = iter_append_model_and_provider(response)
         return response if stream else anext(response)
@@ -117,14 +138,14 @@ class Chat():
     def __init__(self, client: Client, provider: ProviderType = None):
         self.completions = Completions(client, provider)
 
-def iter_image_response(response: Iterator) -> Union[ImagesResponse, None]:
-    for chunk in list(response):
+async def iter_image_response(response: Iterator) -> Union[ImagesResponse, None]:
+    async for chunk in list(response):
         if isinstance(chunk, ImageProviderResponse):
             return ImagesResponse([Image(image) for image in chunk.get_list()])
 
-def create_image(client: Client, provider: ProviderType, prompt: str, model: str = "", **kwargs) -> Iterator:
+def create_image(client: Client, provider: ProviderType, prompt: str, model: str = "", **kwargs) -> AsyncIterator:
     prompt = f"create a image with: {prompt}"
-    return provider.create_completion(
+    return provider.create_async_generator(
         model,
         [{"role": "user", "content": prompt}],
         True,
@@ -138,7 +159,7 @@ class Images():
         self.provider: ImageProvider = provider
         self.models: ImageModels = ImageModels(client)
 
-    def generate(self, prompt, model: str = None, **kwargs) -> ImagesResponse:
+    async def generate(self, prompt, model: str = None, **kwargs) -> ImagesResponse:
         provider = self.models.get(model, self.provider)
         if isinstance(provider, type) and issubclass(provider, BaseProvider):
             response = create_image(self.client, provider, prompt, **kwargs)
@@ -156,11 +177,11 @@ class Images():
             raise NoImageResponseError()
         return image
 
-    def create_variation(self, image: ImageType, model: str = None, **kwargs):
+    async def create_variation(self, image: ImageType, model: str = None, **kwargs):
         provider = self.models.get(model, self.provider)
         result = None
         if isinstance(provider, type) and issubclass(provider, BaseProvider):
-            response = provider.create_completion(
+            response = provider.create_async_generator(
                 "",
                 [{"role": "user", "content": "create a image like this"}],
                 True,
@@ -168,7 +189,7 @@ class Images():
                 proxy=self.client.get_proxy(),
                 **kwargs
             )
-            for chunk in response:
+            async for chunk in response:
                 if isinstance(chunk, ImageProviderResponse):
                     result = ([chunk.images] if isinstance(chunk.images, str) else chunk.images)
                     result = ImagesResponse([Image(image)for image in result])