OpenAI Brings Codex to the ChatGPT Mobile App – Full Access for All Users

On Friday OpenAI announced that Codex is now integrated into the ChatGPT mobile application, with preview versions available on Android and iOS for all subscription tiers, including the free plan.

The update emphasizes higher synchronization rates, allowing users to approve code changes, manage threads, and delegate tasks to AI from any location. Developers can inspect screenshots, terminal output, diffs, and test results directly on their phones.

Typical mobile workflows include:

Investigating bugs while waiting for coffee – Codex runs tests and suggests fixes in the developer’s environment, prompting for clarification when needed.

Making critical decisions during a commute – Codex presents alternative solutions, letting the user choose the preferred path before reaching the office.

Preparing rapid client conversations – Codex aggregates recent updates, flags pending issues, and drafts concise briefing notes.

Capturing inspiration on the fly – Users can start new threads or add ideas to ongoing work without leaving the mobile device.

Under the hood, Codex uses a secure relay layer that keeps the execution environment hidden from the public internet while preserving session state and context across devices. With the official remote‑SSH release, Codex can connect to hosted development environments, automatically detecting SSH hosts and allowing project creation and thread execution as if running locally.

OpenAI also outlined upcoming enhancements: programmatic access tokens for CI pipelines, universally available hooks for secret scanning, validation, logging, and custom behavior, and HIPAA‑compliant usage of Codex in enterprise settings.

The mobile Codex features are currently in preview on iOS and Android for all plans worldwide; a Windows‑based phone‑connection feature is slated for a later release.