Check Existing Issues

• I have searched for any existing and/or related issues.
• I have searched for any existing and/or related discussions.
• I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
• I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

0.7.2

Ollama Version (if applicable)

no ollame

Operating System

Windows

Browser (if applicable)

No response

Confirmation

• I have read and followed all instructions in README.md.
• I am using the latest version of both Open WebUI and Ollama.
• I have included the browser console logs.
• I have included the Docker container logs.
• I have provided every relevant configuration, setting, and environment variable used in my setup.
• I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
• I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
• Start with the initial platform/version/OS and dependencies used,
• Specify exact install/launch/configure commands,
• List URLs visited, user input (incl. example values/emails/passwords if needed),
• Describe all options and toggles enabled or changed,
• Include any files or environmental changes,
• Identify the expected and actual result at each stage,
• Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

• An Ollama-compatible LLM provider is added
• the models are available to be choosen for a chat
• the chat works

Actual Behavior

• An Ollama-compatible LLM provider is added
• the models are available to be choosen for a chat
• the chat does not work, instead the error "400: Model 'azure-o4-mini:latest' was not found".

Steps to Reproduce

• Install Windows
• Install Docker
• Pull and then run the Open Webui container with debug logging
• Add Ollama as LLM provider - available models can be chosen for a chat and work
• Add a custom LLM provider (which does not use ":xxx" like ":latest" or ":14b" in the model names - available models can be chosen for a chat but don't work

Logs & Screenshots

2026-02-12 15:16:02.437 | DEBUG | open_webui.utils.middleware:process_chat_payload:1641 - tool_ids=None

2026-02-12 15:16:02.437 | DEBUG | open_webui.utils.middleware:process_chat_payload:1642 - direct_tool_servers=[]

2026-02-12 15:16:02.438 | DEBUG | open_webui.utils.chat:generate_chat_completion:171 - generate_chat_completion: {'stream': True, 'model': 'azure-o4-mini', 'messages': [{'role': 'user', 'content': "What are 5 creative things I could do with my kids' art? I don't want to throw them away, but it's also so much clutter."}], 'metadata': {'user_id': '50f9c58c-88a6-41df-ad7d-41585fb4a24e', 'chat_id': '01ab8261-b7ee-48cc-91fd-1976321df6f8', 'message_id': '5c397ddc-4c87-4e5c-a936-6fd35fb31b6a', 'parent_message': {'id': 'c0c7598d-41af-4854-9456-887802f0ab2f', 'parentId': None, 'childrenIds': ['5c397ddc-4c87-4e5c-a936-6fd35fb31b6a'], 'role': 'user', 'content': "What are 5 creative things I could do with my kids' art? I don't want to throw them away, but it's also so much clutter.", 'timestamp': 1770909362, 'models': ['azure-o4-mini']}, 'parent_message_id': 'c0c7598d-41af-4854-9456-887802f0ab2f', 'session_id': 'VTo6LB43IhJiEhw5AAAD', 'filter_ids': [], 'tool_ids': None, 'tool_servers': [], 'files': None, 'features': {'voice': False, 'image_generation': False, 'code_interpreter': False, 'web_search': False}, 'variables': {'{{USER_NAME}}': 'My User', '{{USER_LOCATION}}': 'Unknown', '{{CURRENT_DATETIME}}': '2026-02-12 16:16:02', '{{CURRENT_DATE}}': '2026-02-12', '{{CURRENT_TIME}}': '16:16:02', '{{CURRENT_WEEKDAY}}': 'Thursday', '{{CURRENT_TIMEZONE}}': 'Europe/Berlin', '{{USER_LANGUAGE}}': 'en-US'}, 'model': {'id': 'azure-o4-mini', 'name': 'azure-o4-mini', 'object': 'model', 'created': 1770909353, 'owned_by': 'ollama', 'ollama': {'name': 'azure-o4-mini', 'model': 'azure-o4-mini', 'connection_type': 'external', 'urls': [2]}, 'connection_type': 'external', 'tags': [], 'actions': [], 'filters': []}, 'direct': False, 'params': {'stream_delta_chunk_size': None, 'reasoning_tags': None, 'function_calling': 'default'}}, 'options': {}}

2026-02-12 15:16:02.440 | DEBUG | open_webui.main:process_chat:1746 - Error processing chat payload: 400: Model 'azure-o4-mini:latest' was not found

Additional Information

The model names delivered by the LLM provider are without ":latest" or ":14b", there is no ":" included in the name.

In main/backend/open_webui/routers/ollama.py there are several code snippets with:
if ":" not in model:
model = f"{model}:latest"

So it seems Open Webui is always adding a ":latest" without it being necessary.
The same LLM provider works without any problems in N8N using their Ollama tool.