OpenAI Codex
5 facts, each with its source · Latest check 27 Sep 2026
| Fact | Current value | Verified |
|---|---|---|
| Made by Source ↗ | OpenAI | Verified 27 Sep 2026 |
| Best at Source ↗ | Running coding tasks in parallel, bundled with ChatGPT | Verified 27 Sep 2026 |
| Watch out for Source ↗ | It shares its usage allowance with ChatGPT | Verified 27 Sep 2026 |
| Free plan Source ↗ | Limited: included in ChatGPT Free | Verified 27 Sep 2026 |
| Suits Source ↗ | Builders | Verified 27 Sep 2026 |
Lessons that cite OpenAI Codex
These lessons pull OpenAI Codex’s facts from this sheet, so they update when it does.
- Assistants and agents · Module 4, Types and styles of AI
- Build: coding agents, app builders and model platforms · Module 11, The Tool Atlas: choosing the right tool
Knowing the tool is half of it. Our lessons show you how to use OpenAI Codex and the tools around it well, with every fact kept current. Find your level → Compare OpenAI Codex with others →
