OpenAI Brings Codex to the ChatGPT Mobile App for All Users

OpenAI announced that Codex is now integrated into the ChatGPT mobile application on both Android and iOS, with a preview available to all users, including those on the free plan.

The update emphasizes higher synchronization rates, enabling users to approve code changes, assign tasks, and monitor AI activity from any location.

OpenAI reports that more than four million people use Codex each week, and the new mobile collaboration mode is designed for AI agents that handle longer‑running and more complex tasks.

Within the app, users can view Codex’s current status, see recent discoveries, approve subsequent steps, or add new ideas. Because Codex runs in the developer’s own environment, it can inspect relevant files, reproduce bugs in a browser, execute tests, and begin fixes; if clarification or permission is needed, the user can respond or approve directly from the phone, viewing screenshots, terminal output, and test results before returning to the computer.

Investigate bugs while waiting for coffee: Codex checks files, reproduces issues, runs tests, and streams results to the phone for quick review.

Make critical decisions during a commute: Codex proposes two viable refactor solutions, allowing the user to weigh trade‑offs on the phone and let the chosen plan progress before reaching the office.

Prepare for fast‑paced client conversations: After a meeting, Codex aggregates the latest updates from Slack, email, and documentation, flags pending items, and drafts a concise briefing that can be refreshed on the fly.

Capture inspiration instantly: Users can start a new thread or add to an existing one from the phone, sending ideas to the AI so work begins before returning to the desk.

Codex operates behind a secure relay layer that protects machines from direct exposure to the public internet and keeps session state and context synchronized across all devices logged into ChatGPT.

With the official release of remote SSH, Codex can directly connect to hosted remote environments, automatically detecting SSH hosts and allowing project creation and thread execution on remote machines as if they were local. After a successful connection, the same secure relay lets users control long‑running tasks from their phone while the work continues on the desktop.

Future updates announced by OpenAI include programmatic access tokens for scoped credentials usable in CI pipelines, universal Hooks for secret scanning, validators, logging, memory, and custom repository behavior, as well as HIPAA‑compliant local usage of Codex within ChatGPT Enterprise workspaces for medical institutions.

The preview is live on iOS and Android for all subscription tiers, and a Windows mobile connection feature will be released later; users need to update both the ChatGPT mobile app and the Codex desktop application to access the new functionality.