OpenAI Codex
openai.com/codex ↗Our verdict
A strong pick if you already pay for ChatGPT.
OpenAI's page describes cloud agents and PR review included in existing plans.
Based on public docs and pricing pages — not hands-on testing.Strengths
- Included in ChatGPT plans
- Runs parallel agents in the cloud
- CLI, IDE extension and ChatGPT app
Limitations
- Usage tied to ChatGPT plan limits
- Best experience requires ChatGPT account
Good for
cloud coding agentsautomated PR reviewcoding in terminal or IDE