Codex is OpenAI’s series of AI coding tools that help developers move faster by delegating tasks to powerful cloud and local coding agents.

Aug 10, 2021 · We’ve created an improved version of OpenAI Codex, our AI system that translates natural language to code, and we are releasing it through our API in private beta starting today.

May 16, 2025 · Technical teams at OpenAI have started using Codex as part of their daily toolkit. It is most often used by OpenAI engineers to offload repetitive, well-scoped tasks, like refactoring, …

The Codex CLI is available on macOS and Linux. Windows support is experimental. For the best Windows experience, use Codex in a WSL workspace and follow our Windows setup guide.

This lets Codex work with the code in your repositories and create pull requests from its work. Your Plus, Pro, Business, Edu, or Enterprise plan includes Codex.

4 days ago · Codex now supports agent skills: reusable bundles of instructions (plus optional scripts and resources) that help Codex reliably complete specific tasks. Skills are available in both the Codex …

Sep 15, 2025 · Codex now works where you develop—in your terminal or IDE, on the web, in GitHub, and even in the ChatGPT iOS app. Codex is included with ChatGPT Plus, Pro, Business, Edu, and …

Review code: Codex analyzes code to identify potential bugs, logic errors, and unhandled edge cases. Debug and fix problems: When something breaks, Codex helps trace failures, diagnose root causes, …

Codex is an AI coding agent that helps you write, review, and ship code faster. You can pair with it in your local tools or delegate work for it to complete in the cloud.

With the Codex VS Code extension, you can use Codex side by side in your IDE or delegate tasks to the cloud. Codex is included with ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.