Run a coding assistant in your terminal to help with programming tasks.
From the README
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Excerpts from the project README on GitHub. Copyright and licensing remain with the respective authors.
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Free · no card · unsubscribe anytimeLightweight coding agent that runs in your terminal
codex has 12k stars on GitHub. It has been forked 18.3k times. codex is written mainly in Rust. It has been in active development since 2025. codex is available under the Apache-2.0 license.
What is codex?
Lightweight coding agent that runs in your terminal
Is codex open source?
codex is an open-source project. It is released under the Apache-2.0 license.
Is codex free?
Yes. codex is free and open source — you can use, modify and self-host it.
What license does codex use?
codex is available under the Apache-2.0 license.
What language is codex written in?
codex is written mainly in Rust.
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