OpenAI Codex

Try OpenAI's coding agent across a desktop app, CLI, IDE extension and cloud, included with ChatGPT plans.

Verdict

Try: Worth an afternoon on a test project.

Category

Coding agent

Tracks

Vibe Coding Agents

Pricing (as published)

Included in ChatGPT Free ($0), Go ($8), Plus ($20) and Pro ($100/$200/$500 per month) plans; API-key usage billed at API rates.

Official link

https://developers.openai.com/codex/pricing

Date checked

2026-10-14

Our take

Codex shares usage with ChatGPT Work. Free and Go get lighter models in the desktop app; Plus adds the web, CLI, IDE and iOS surfaces plus cloud features like automatic code review. Usage limits vary by model and task, so check the usage dashboard. Note that GPT-5.5 is retired from Codex with ChatGPT sign-in on Oct 14, 2026.

Research-based verdict, not a hands-on test. Sponsors can't buy verdicts.

Sources

• https://developers.openai.com/codex/pricing