diff --git a/litellm/llms/custom_httpx/llm_http_handler.py b/litellm/llms/custom_httpx/llm_http_handler.py
index 1ab8a94adf..6dd47cc223 100644
--- a/litellm/llms/custom_httpx/llm_http_handler.py
+++ b/litellm/llms/custom_httpx/llm_http_handler.py
@@ -462,7 +462,7 @@ class BaseLLMHTTPHandler:
         )
 
         if fake_stream is True:
-            model_response: (ModelResponse) = provider_config.transform_response(
+            model_response: ModelResponse = provider_config.transform_response(
                 model=model,
                 raw_response=response,
                 model_response=litellm.ModelResponse(),
@@ -595,7 +595,7 @@ class BaseLLMHTTPHandler:
         )
 
         if fake_stream is True:
-            model_response: (ModelResponse) = provider_config.transform_response(
+            model_response: ModelResponse = provider_config.transform_response(
                 model=model,
                 raw_response=response,
                 model_response=litellm.ModelResponse(),
@@ -1055,9 +1055,16 @@ class BaseLLMHTTPHandler:
         if extra_headers:
             headers.update(extra_headers)
 
+        # Check if streaming is requested
+        stream = response_api_optional_request_params.get("stream", False)
+
         api_base = responses_api_provider_config.get_complete_url(
             api_base=litellm_params.api_base,
+            api_key=litellm_params.api_key,
             model=model,
+            optional_params=response_api_optional_request_params,
+            litellm_params=dict(litellm_params),
+            stream=stream,
         )
 
         data = responses_api_provider_config.transform_responses_api_request(
@@ -1079,9 +1086,6 @@ class BaseLLMHTTPHandler:
             },
         )
 
-        # Check if streaming is requested
-        stream = response_api_optional_request_params.get("stream", False)
-
         try:
             if stream:
                 # For streaming, use stream=True in the request
@@ -1170,9 +1174,16 @@ class BaseLLMHTTPHandler:
         if extra_headers:
             headers.update(extra_headers)
 
+        # Check if streaming is requested
+        stream = response_api_optional_request_params.get("stream", False)
+
         api_base = responses_api_provider_config.get_complete_url(
             api_base=litellm_params.api_base,
+            api_key=litellm_params.api_key,
             model=model,
+            optional_params=response_api_optional_request_params,
+            litellm_params=dict(litellm_params),
+            stream=stream,
         )
 
         data = responses_api_provider_config.transform_responses_api_request(
@@ -1193,8 +1204,6 @@ class BaseLLMHTTPHandler:
                 "headers": headers,
             },
         )
-        # Check if streaming is requested
-        stream = response_api_optional_request_params.get("stream", False)
 
         try:
             if stream: