AI Coding

Codex CLI

OpenAI's open-source terminal coding agent built in Rust. Runs locally, reads your repo, edits files, and executes commands. Powered by o3 and o4-mini models.

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Codex CLI is OpenAI's open-source coding agent that runs directly in your terminal. Built in Rust for speed, it launches into a full-screen terminal UI where it reads your repository, makes edits, and runs commands as you iterate together. It brings the power of o3 and o4-mini into your local workflow with a conversational interface where you review every action in real time. Install via npm or Homebrew, authenticate with your ChatGPT account or API key, and you are coding. The codex-mini model is optimized specifically for low-latency code Q&A and editing. It is included with ChatGPT Plus, Pro, Business, Edu, and Enterprise plans at no additional cost. For developers who want OpenAI's models in a local terminal workflow rather than a browser, this is the tool.

ai coding cli openai open-source rust terminal

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Get started with Codex CLI

OpenAI's open-source terminal coding agent built in Rust. Runs locally, reads your repo, edits files, and executes commands. Powered by o3 and o4-mini models.

Try Codex CLI

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