diff --git a/backend/open_webui/tools/builtin.py b/backend/open_webui/tools/builtin.py
index 8aa27520f..508e7d8b8 100644
--- a/backend/open_webui/tools/builtin.py
+++ b/backend/open_webui/tools/builtin.py
@@ -2494,7 +2494,6 @@ async def create_automation(
     name: str,
     prompt: str,
     rrule: str,
-    model_id: Optional[str] = None,
     __request__: Request = None,
     __user__: dict = None,
     __metadata__: dict = None,
@@ -2502,6 +2501,7 @@ async def create_automation(
     """
     Create a scheduled automation that runs a prompt on a recurring or one-time schedule.
     Use this when the user wants to schedule a task to run automatically.
+    The automation will use the current chat model.
 
     The rrule parameter must be a valid iCalendar RRULE string. Common examples:
     - Every day at 9am: "DTSTART:20250101T090000\\nRRULE:FREQ=DAILY"
@@ -2516,7 +2516,6 @@ async def create_automation(
     :param name: A short descriptive name for the automation
     :param prompt: The prompt/instructions to execute on each run
     :param rrule: An iCalendar RRULE string defining the schedule
-    :param model_id: Optional model ID to use. Defaults to the current chat model if omitted.
     :return: JSON with the created automation details including id, next scheduled runs
     """
     if __request__ is None:
@@ -2535,11 +2534,10 @@ async def create_automation(
         if not user:
             return json.dumps({'error': 'User not found'})
 
-        # Default to current chat's model if not specified
+        # Always use the calling model for the automation
+        model_id = (__metadata__ or {}).get('model_id')
         if not model_id:
-            model_id = (__metadata__ or {}).get('model_id') or (__metadata__ or {}).get('model')
-        if not model_id:
-            return json.dumps({'error': 'model_id is required (could not detect current model)'})
+            return json.dumps({'error': 'Could not detect current model'})
 
         # Validate the RRULE
         try:
diff --git a/backend/open_webui/utils/middleware.py b/backend/open_webui/utils/middleware.py
index 058a8cb13..4475ebef4 100644
--- a/backend/open_webui/utils/middleware.py
+++ b/backend/open_webui/utils/middleware.py
@@ -2460,6 +2460,7 @@ async def process_chat_payload(request, form_data, user, metadata, model):
 
     metadata = {
         **metadata,
+        'model_id': form_data.get('model'),
         'tool_ids': tool_ids,
         'terminal_id': terminal_id,
         'files': files,