OpenAI announced on May 14, 2026 that Codex, their cloud-based AI coding agent, is now available inside the ChatGPT mobile app on iOS and Android. The mobile experience allows developers to connect to machines running Codex and work across active threads, approvals, plugins, and project context from their phones.
Mobile Controls Without Transferring Development Environments
The ChatGPT mobile app functions as a secure relay and control interface rather than hosting development environments directly on smartphones. Files, credentials, plugins, and permissions remain on the host machine where Codex operates. Users can switch between active task threads, review Codex's output, approve commands, switch models, or initiate new tasks from their mobile devices.
Platform Support and Availability
At launch, the mobile app can only connect to the macOS version of the Codex desktop app. Windows support is planned but no release date has been announced. The feature is available in preview for all ChatGPT subscription tiers, including the free plan.
The announcement gained significant attention on Hacker News with 398 points and 200 comments. Multiple technology publications including The Verge, 9to5Mac, TechCrunch, MacRumors, and Eastern Herald covered the launch, with The Verge describing it as part of OpenAI's push to make AI coding truly portable.
Key Takeaways
- Codex is now available in ChatGPT mobile apps on iOS and Android as of May 14, 2026
- The mobile interface acts as a control relay while development environments remain on host machines
- Users can manage active tasks, review output, and approve commands from their phones
- Currently supports macOS only, with Windows support planned but undated
- Available in preview across all ChatGPT plans including the free tier