openai/codex

Lightweight coding agent that runs in your terminal

What it solves

It provides a way to run a coding agent locally on your computer via a command-line interface, allowing developers to integrate AI-assisted coding directly into their terminal environment.

How it works

Codex CLI is a standalone tool that can be installed on Mac, Linux, or Windows. It connects to OpenAI's models via a ChatGPT account (Plus, Pro, Business, Edu, or Enterprise plans) or an API key to provide coding assistance.

Who it’s for

Developers who want a local terminal-based coding agent rather than relying solely on a web interface or IDE extensions.

Highlights

  • Local execution via CLI
  • Support for macOS, Linux, and Windows
  • Multiple installation paths including npm, Homebrew, and direct shell scripts
  • Integration with existing ChatGPT subscription plans

Written about in

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