diff --git a/backend/open_webui/utils/middleware.py b/backend/open_webui/utils/middleware.py
index 5544888813..d7f00959a5 100644
--- a/backend/open_webui/utils/middleware.py
+++ b/backend/open_webui/utils/middleware.py
@@ -57,6 +57,7 @@ from open_webui.routers.images import (
     image_generations,
 )
 from open_webui.routers.pipelines import (
+    get_sorted_filters,
     process_pipeline_inlet_filter,
     process_pipeline_outlet_filter,
 )
@@ -5437,6 +5438,16 @@ async def streaming_chat_response_handler(response, ctx):
                 return f'data: {item}\n\n'
 
             assistant_message = {}
+            has_api_outlet_filters = ENABLE_API_OUTLET_FILTERS and bool(filter_functions)
+            if ENABLE_API_OUTLET_FILTERS and not has_api_outlet_filters:
+                try:
+                    model_id = model.get('id') if isinstance(model, dict) else model
+                    has_api_outlet_filters = bool(
+                        (isinstance(model, dict) and 'pipeline' in model)
+                        or get_sorted_filters(model_id, request.app.state.MODELS)
+                    )
+                except Exception:
+                    has_api_outlet_filters = True
 
             for event in events:
                 event, _ = await process_filter_functions(
@@ -5460,11 +5471,11 @@ async def streaming_chat_response_handler(response, ctx):
                 )
 
                 if data:
-                    if ENABLE_API_OUTLET_FILTERS:
+                    if has_api_outlet_filters:
                         update_assistant_message_from_stream(assistant_message, data)
                     yield data
 
-            if ENABLE_API_OUTLET_FILTERS and assistant_message:
+            if has_api_outlet_filters and assistant_message:
                 ctx['assistant_message'] = assistant_message
                 await outlet_filter_handler(ctx)