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 …

4 days ago · The Codex app makes managing and directing agents much easier, and now with GPT‑5.3-Codex it’s more interactive. With the new model, Codex provides frequent updates so you …

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, Edu, and …

Feb 2, 2026 · The Codex app changes how software gets built and who can build it—from pairing with a single coding agent on targeted edits to supervising coordinated teams of agents across the full …

May 16, 2025 · Introducing Codex: a cloud-based software engineering agent that can work on many tasks in parallel, powered by codex-1. With Codex, developers can simultaneously deploy multiple …

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 …

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.

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 potential bugs, …

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.