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(deployment-open-webui)=
# Open WebUI
1. Install the (Docker)[https://docs.docker.com/engine/install/]
2. Start the vLLM server with the supported chat completion model, e.g.
```console
vllm serve qwen/Qwen1.5-0.5B-Chat
```
1. Start the (Open WebUI)[https://github.com/open-webui/open-webui] docker container (replace the vllm serve host and vllm serve port):
```console
docker run -d -p 3000:8080 \
--name open-webui \
-v open-webui:/app/backend/data \
-e OPENAI_API_BASE_URL=http://<vllm serve host>:<vllm serve port>/v1 \
--restart always \
ghcr.io/open-webui/open-webui:main
```
1. Open it in the browser: <http://open-webui-host:3000/>
On the top of the web page, you can see the model `qwen/Qwen1.5-0.5B-Chat`.
:::{image} /assets/deployment/open_webui.png
:::