GitHub Copilot

Cecli can connect to GitHub Copilot’s LLMs because Copilot exposes a standard OpenAI-style endpoint at:

https://api.githubcopilot.com

First, install cecli:

uv tool install cecli-dev

When you specify a GitHub Copilot model on start up (e.g. github_copilot/gpt-5-mini), cecli will enter a GitHub auth workflow natively, wherein you will connect to your GitHub account with the provided auth code to grant the system access.