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ChatAll lets you send messages to multiple AI models simultaneously. Connect it to CometAPI to access GPT, Claude, Gemini, and more through a single key.

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Prerequisites

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Setup

1

Get your CometAPI API key

Log in to the CometAPI dashboard. Click Add API Key and copy your key and base URL (https://api.cometapi.com).
CometAPI dashboard — Add API Key
CometAPI API key and base URL
2

Configure OpenAI in ChatAll

Open ChatAll → Settings → OpenAI. Enter https://api.cometapi.com/v1 in the API Address field, paste your CometAPI key into API Key, and click Save.
ChatAll OpenAI settings with CometAPI base URL
API key field filled in ChatAll settings
3

Select models

Click the model selector to view and switch between available models.
ChatAll model selection panel
Models listed and selected in ChatAll
Last modified on July 2, 2026