In one line
OpenAI's local terminal coding agent. The repository license is Apache-2.0.
- Paid
- 2 sources
- GitHub stars, read on 2026-10-15: 129,378
- Apache-2.0
What is Codex?
Codex CLI is OpenAI's local terminal coding agent. Docs are at developers.openai.com/codex and the code is in openai/codex. The repository says you can sign in with ChatGPT Plus, Pro, Business, Edu, or Enterprise, or use an API key. It also documents IDE, desktop, and web surfaces, including chatgpt.com/codex.
What can you use Codex for?
- Edit a repo from a local terminal
- Sign in with ChatGPT or use an API key
- Compare the surface with Claude Code and Cursor
Codex pricing and usage limits
The official repository says to use a paid ChatGPT plan or an API key. This entry does not quote prices.
This site never quotes prices. Confirm amounts on the official site.
Related comparisons
Claude Code vs Cursor vs Codex
AI coding agent comparison of Claude Code, Cursor, and Codex: vendor, surface, source availability, and pricing model. Reading order is not a ranking, and there is no winner.
4 dimensions
Sources checked
These pages were opened during verification. Details may have changed; the official pages win.
Sources last checked for this entry:
This date records a check of this entry against the linked sources. It does not mean hands-on testing, continuous monitoring, or a security audit. How sources are checked
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