diff --git a/litellm/llms/custom_httpx/llm_http_handler.py b/litellm/llms/custom_httpx/llm_http_handler.py
index df06bd8d3fe..1b0ee1b9be5 100644
--- a/litellm/llms/custom_httpx/llm_http_handler.py
+++ b/litellm/llms/custom_httpx/llm_http_handler.py
@@ -5227,7 +5227,13 @@ class BaseLLMHTTPHandler:
                         session_configuration_request=None,
                     )
                     if synthetic_session is not None:
-                        await websocket.send_text(json.dumps(synthetic_session))
+                        synthetic_session_str = json.dumps(synthetic_session)
+                        # Record before sending so the synthetic session.created is
+                        # captured in the session log alongside provider-driven
+                        # events; without this it would be silently absent from
+                        # success_handler / async_success_handler payloads.
+                        realtime_streaming.store_message(synthetic_session_str)
+                        await websocket.send_text(synthetic_session_str)
                         realtime_streaming._session_created_sent_to_client = True
                         verbose_logger.debug(
                             "Sent synthetic session.created to client to unblock connection"