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Codex CLI

★ 103k

OpenAI's open-source lightweight coding agent that runs in your terminal

Codex CLI does the job of Claude Code and Devin, self-hosted. It is Apache-2.0-licensed, so you can do essentially what you like with it, and it installs in about one command. Claude Code bills $20-200 for it. 103k stars on GitHub.

Open-source replacement for Claude Code, Devin.

Licence
Apache-2.0
Self-hosting
Easy
The paid one costs
$20-200
GitHub stars
103k
view the code →official site →

Is it actually a replacement?

We have written a verdict on what it replaces — what you lose, and why people still pay:

How Codex CLI runs

Where it runs

Codex CLI runs on your server.

What setup takes

not verified by us yet — check the repo README.

Codex CLI questions

Is Codex CLI open source?

Yes — it is released under Apache-2.0.

Can Codex CLI replace Claude Code?

Our verdict on Claude Code is YES. OpenCode (192k stars), DeepSeek Harness (175k stars), Gemini CLI (106k stars) are mature open-source replacements for Claude Code — self-host in one command and stop paying $20/mo.

Can I self-host Codex CLI?

Yes — we rate it easy to self-host, and it runs on your server.

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