OpenAI releases app version of Codex, allowing multiple agents to run simultaneously, and OpenAI developers claim they code 99.9% of their work with the Codex app

OpenAI has released the Codex app , a desktop app for agent-driven development. The Codex app features multitasking and code diffing, and can also perform various tasks using Skills.

Introducing the Codex app | OpenAI

The sidebar displays a list of projects. You can run AI agents in multiple projects simultaneously.

You can also commit to the repository and create new branches.

You can also view the difference between before and after changes.

Skills can be used to execute predefined tasks, or to automatically execute tasks by specifying the day of the week, time, and interval.

Dominik Kundel, who is in charge of Codex-related product development at OpenAI, said, 'Until now, I've used the IDE and the Codex extension, but I've completely migrated to the Codex app and now do 99.9% of my work with the Codex app.' In addition, the following post tree contains Kundel's advice on using the Codex app.

Been helping bringing the Codex app to life and at this point I've fully moved from using an IDE and the Codex Extension to working 99.9% of the time exclusively in the Codex app.

Here are some tips of what I found useful to get the most out of the app 👇

— dominik kundel (@dkundel) February 2, 2026

The Codex app is currently only available for macOS, with a Windows version coming soon. For a limited time, Codex is available on ChatGPT's free and Go plans, and the Codex rate limit is doubled for Plus, Pro, Business, Enterprise, and Edu plans.

The Codex app is available starting today on macOS, with Windows coming soon.

For a limited time, Codex is available through ChatGPT Free and Go subscriptions—and we're doubling rate limits for Plus, Pro, Business, Enterprise, and Edu users—across the Codex app, CLI, IDE…

— OpenAI (@OpenAI) February 2, 2026