> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aihubmix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ChatHub

> Configure AIHubMix in ChatHub with the OpenAI-compatible API key option.

ChatHub is a multi-model AI client that can compare answers from different models side by side. AIHubMix can be connected through ChatHub's OpenAI-compatible custom API key settings.

## Install and Configure AIHubMix

1. Install the ChatHub extension from the Chrome Web Store: [ChatHub - ChatGPT, Gemini, Claude sidebar](https://chromewebstore.google.com/detail/chathub-chatgpt-gemini-cl/iaakpnchhognanibcahlpcplchdfmgma?utm_source=chathub.gg).
2. Open ChatHub, click the gear icon in the lower-left corner, find **Use your own API key**, enable **OpenAI**, and click **configure**.

<img src="https://mintcdn.com/aihubmix/j4q_-ouc8NkeJVBQ/public/cn/ChatHub-new-01.png?fit=max&auto=format&n=j4q_-ouc8NkeJVBQ&q=85&s=c3531e3340cd5ab9e9e5923e191da56d" alt="ChatHub API key settings" width="1920" height="922" data-path="public/cn/ChatHub-new-01.png" />

3. Fill in the AIHubMix connection fields:

* **API Key**: the key created in the [AIHubMix console](https://aihubmix.com/token), usually in the `sk-***` format.
* **API Host**: use the AIHubMix gateway. If the primary domain is unavailable, replace it with `https://api.inferera.com` and keep the path behavior unchanged.

```text theme={null}
https://aihubmix.com
```

* **Model**: choose or enter the model ID you want to use, for example `gpt-5.5`. Click **Confirm**, then return to settings and click **Save changes**.

<img src="https://mintcdn.com/aihubmix/j4q_-ouc8NkeJVBQ/public/cn/ChatHub-new-02.png?fit=max&auto=format&n=j4q_-ouc8NkeJVBQ&q=85&s=bceab13687f6018ff8c4fa012173282e" alt="ChatHub API key and API Host" width="1920" height="922" data-path="public/cn/ChatHub-new-02.png" />

4. Return to the ChatHub main page. You should see the enabled AIHubMix configuration on the left, then send a short message to verify that the model replies normally.

<img src="https://mintcdn.com/aihubmix/j4q_-ouc8NkeJVBQ/public/cn/ChatHub-new-03.png?fit=max&auto=format&n=j4q_-ouc8NkeJVBQ&q=85&s=9d998d7c49b4dc6ae47975eec16aaf45" alt="ChatHub verify AIHubMix reply" width="1920" height="922" data-path="public/cn/ChatHub-new-03.png" />

## Troubleshooting

**No response after saving**: check that the API key starts with `sk-`, the API Host is `https://aihubmix.com` without a trailing slash, and the AIHubMix account has enough balance.

**Model not found**: copy the model ID from the AIHubMix model list and paste it into ChatHub again.

***

Last updated: 2026-07-03