OpenAI Brings Codex to ChatGPT Mobile — Control Your AI Coding Agent from Your Phone
Codex Goes Mobile: Remote Control for AI Coding
OpenAI brought Codex to the ChatGPT iOS and Android apps on May 14, turning phones into a control surface for Codex sessions already running on a desktop, devbox, or remote environment. The phone doesn't process the codebase — it streams real-time updates from wherever Codex is working.
Real-Time Updates: Diffs, Terminal Output, Test Results
Screenshots, terminal output, code diffs, and test results all flow back to the phone in real time. Users can approve or reject each step, keeping human oversight on AI-driven code changes. Files, credentials, and local permissions stay on the host machine, keeping the security model intact.
All Plans, Including Free
The preview rolls out across all ChatGPT plans, including Free and Go. Over 4 million people now use Codex each week, and mobile access extends the agent's reach beyond desktop sessions. Current support covers macOS-hosted Codex sessions; Windows phone connectivity is coming in a future update.
Related Articles
GPT-5.6 moved from preview into access across ChatGPT, Codex and the OpenAI API. OpenAI paired the rollout with an 80.0 Coding Agent Index score, 2.8 points above Claude Fable 5, while claiming lower token use, time and cost.
OpenAI announced that Codex, its AI coding agent, is coming to the ChatGPT mobile app, enabling users to write, edit, and debug code directly from their smartphones.
The acquisition points Codex toward enterprise agents that keep working after a laptop closes. OpenAI says Codex now has more than 5 million weekly users, up 400% from earlier this year, while Ona brings cloud environments used by 2 million developers.