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.

The Codex app is a focused desktop experience for working on Codex threads in parallel, with built-in worktree support, automations, and Git functionality. ChatGPT Plus, Pro, Business, …

It helps you build faster, squash bugs, and understand unfamiliar code. With the Codex VS Code extension, you can use Codex side by side in your IDE or delegate tasks to Codex Cloud. …

Understand unfamiliar codebases: Codex can read and explain complex or legacy code, helping you grasp how teams organize systems. Review code: Codex analyzes code to identify …

Feb 2, 2026 · Introducing the Codex app for macOS—a command center for AI coding and software development with multiple agents, parallel workflows, and long-running tasks.

Business, Edu, and Enterprise plans with flexible pricing can purchase additional workspace credits to continue using Codex. If you are approaching usage limits, you can also switch to …

Dec 18, 2025 · GPT-5.2-Codex is OpenAI’s most advanced coding model, offering long-horizon reasoning, large-scale code transformations, and enhanced cybersecurity capabilities.

Windows Tips for running Codex on Windows The easiest way to use Codex on Windows is to set up the IDE extension or install the CLI and run it from PowerShell.

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.

How to get started using Codex after downloading the app and signing into ChatGPT.