diff --git a/src/openai/lib/_chat_completion_resources.py b/src/openai/lib/_chat_completion_resources.py
index 038448c25f..8ceaa42a11 100644
--- a/src/openai/lib/_chat_completion_resources.py
+++ b/src/openai/lib/_chat_completion_resources.py
@@ -140,7 +140,7 @@ def parser(raw_completion: ChatCompletion) -> ParsedChatCompletion[ResponseForma
                 "verbosity": verbosity,
                 "web_search_options": web_search_options,
             },
-            completion_create_params.CompletionCreateParams,
+            completion_create_params.CompletionCreateParamsNonStreaming,
         ),
         options=make_request_options(
             extra_headers=extra_headers,
@@ -259,7 +259,7 @@ def parser(raw_completion: ChatCompletion) -> ParsedChatCompletion[ResponseForma
                 "verbosity": verbosity,
                 "web_search_options": web_search_options,
             },
-            completion_create_params.CompletionCreateParams,
+            completion_create_params.CompletionCreateParamsNonStreaming,
         ),
         options=make_request_options(
             extra_headers=extra_headers,
diff --git a/src/openai/lib/_response_resources.py b/src/openai/lib/_response_resources.py
index 76dff89ae6..f4ca471efa 100644
--- a/src/openai/lib/_response_resources.py
+++ b/src/openai/lib/_response_resources.py
@@ -136,7 +136,9 @@ def parser(raw_response: Response) -> ParsedResponse[TextFormatT]:
                 "user": user,
                 "verbosity": verbosity,
             },
-            response_create_params.ResponseCreateParams,
+            response_create_params.ResponseCreateParamsStreaming
+            if stream
+            else response_create_params.ResponseCreateParamsNonStreaming,
         ),
         options=make_request_options(
             extra_headers=extra_headers,
@@ -252,7 +254,9 @@ def parser(raw_response: Response) -> ParsedResponse[TextFormatT]:
                 "user": user,
                 "verbosity": verbosity,
             },
-            response_create_params.ResponseCreateParams,
+            response_create_params.ResponseCreateParamsStreaming
+            if stream
+            else response_create_params.ResponseCreateParamsNonStreaming,
         ),
         options=make_request_options(
             extra_headers=extra_headers,