diff --git a/pinecone/openapi_support/api_client.py b/pinecone/openapi_support/api_client.py
index afd6b96c..06b1cfe0 100644
--- a/pinecone/openapi_support/api_client.py
+++ b/pinecone/openapi_support/api_client.py
@@ -212,8 +212,9 @@ def __call_api(
                 response_info = extract_response_info(headers)
                 if isinstance(return_data, dict):
                     return_data["_response_info"] = response_info
-                else:
+                elif not isinstance(return_data, (str, int, float, bool, list, tuple, bytes, type(None))):
                     # Dynamic attribute assignment on OpenAPI models
+                    # Skip primitive types that don't support setattr
                     setattr(return_data, "_response_info", response_info)
 
         if _return_http_data_only:
diff --git a/pinecone/openapi_support/asyncio_api_client.py b/pinecone/openapi_support/asyncio_api_client.py
index 58a3a869..c274494d 100644
--- a/pinecone/openapi_support/asyncio_api_client.py
+++ b/pinecone/openapi_support/asyncio_api_client.py
@@ -177,8 +177,9 @@ async def __call_api(
                 response_info = extract_response_info(headers)
                 if isinstance(return_data, dict):
                     return_data["_response_info"] = response_info
-                else:
+                elif not isinstance(return_data, (str, int, float, bool, list, tuple, bytes, type(None))):
                     # Dynamic attribute assignment on OpenAPI models
+                    # Skip primitive types that don't support setattr
                     setattr(return_data, "_response_info", response_info)
 
         if _return_http_data_only: