From routine pull requests to your hardest problems, Codex reliably completes tasks end to end, like building features, complex refactors, migrations, and more, powered by OpenAI’s frontier coding …

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.

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.

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, …

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, …

Use agent skills to extend Codex with task-specific capabilities. A skill packages instructions, resources, and optional scripts so Codex can follow a workflow reliably.

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.

The TypeScript library provides a way to control Codex from within your application that is more comprehensive and flexible than non-interactive mode. Use the library server-side; it requires …

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.

Codex IDE extension Pair with Codex in your IDE Codex is OpenAI’s coding agent that can read, edit, and run code. It helps you build faster, squash bugs, and understand unfamiliar code. With the …