Codex
OpenAI's coding agent, included with ChatGPT plans. It runs in the ChatGPT apps, a CLI, an IDE extension and in the cloud, where it can take on tasks connected to GitHub, Slack and Linear.
Our verdict
Easy to try since it comes with ChatGPT, including the free plan, but the free tier is meant for quick tasks and serious use needs a paid plan.
Use it for
- Agentic coding
- Code review
- Fixing issues
- Cloud coding tasks