OpenAI Codex

Codex is OpenAI's coding agent for software development tasks. It helps investigate projects, work on changes and review code, with a useful workflow centered on a clear objective and verifiable result.

What you can do

• Coding tasks
• Project investigation
• Code review

A useful starting workflow

Describe the desired behavior and the constraints that matter. Review the implementation and run the checks appropriate to the change.

What to compare

Review the changed code and run the checks your project requires. Evaluate the tool on a bounded task with a result you can verify.

Pricing and access

Check the product website for current plans, usage limits and account requirements. The features available in a trial or free account can differ from a paid plan.