diff --git a/libs/partners/anthropic/langchain_anthropic/chat_models.py b/libs/partners/anthropic/langchain_anthropic/chat_models.py
index 2aab9c3a062..330bcb4d6e3 100644
--- a/libs/partners/anthropic/langchain_anthropic/chat_models.py
+++ b/libs/partners/anthropic/langchain_anthropic/chat_models.py
@@ -263,7 +263,11 @@ class ChatAnthropic(BaseChatModel):
                     await run_manager.on_llm_new_token(text, chunk=chunk)
                 yield chunk
 
-    def _format_output(self, data: Any) -> ChatResult:
+    def _format_output(
+        self,
+        data: Any,
+        **kwargs: Any,
+    ) -> ChatResult:
         return ChatResult(
             generations=[
                 ChatGeneration(message=AIMessage(content=data.content[0].text))
@@ -285,7 +289,7 @@ class ChatAnthropic(BaseChatModel):
             return generate_from_stream(stream_iter)
         params = self._format_params(messages=messages, stop=stop, **kwargs)
         data = self._client.messages.create(**params)
-        return self._format_output(data)
+        return self._format_output(data, **kwargs)
 
     async def _agenerate(
         self,
@@ -301,7 +305,7 @@ class ChatAnthropic(BaseChatModel):
             return await agenerate_from_stream(stream_iter)
         params = self._format_params(messages=messages, stop=stop, **kwargs)
         data = await self._async_client.messages.create(**params)
-        return self._format_output(data)
+        return self._format_output(data, **kwargs)
 
 
 @deprecated(since="0.1.0", removal="0.2.0", alternative="ChatAnthropic")