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docs: install CPU PyTorch first on machines without an NVIDIA GPU #1443

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10 changes: 10 additions & 0 deletions docs/getting-started/quick-start/tab-python/_PythonCompat.md
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Expand Up @@ -4,3 +4,13 @@ Open WebUI supports **Python 3.11 and 3.12**. **Python 3.13 is not supported yet
- **For production**, run the **Docker image** or use the **latest Python 3.11**. This is the combination we test against most heavily.
- **Python 3.12 also works**, but we have seen very rare reports of odd behaviour on 3.12 that we have not reproduced on 3.11. If something inexplicable happens on 3.12, drop to the latest 3.11 first.
:::

:::tip No NVIDIA GPU?
On Linux x86_64, installing `open-webui` from PyPI pulls in the default PyTorch build, which brings the NVIDIA CUDA libraries along whatever GPU the machine has. On a machine without an NVIDIA GPU, install the CPU build of PyTorch first, in the same environment, and the Open WebUI install leaves them out:

```bash
pip install torch --index-url https://download.pytorch.org/whl/cpu
```

With uv, run the same command as `uv pip install`. For GPU acceleration on AMD, install the ROCm build from [PyTorch's install page](https://pytorch.org/get-started/locally/) instead.
:::
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