SAN FRANCISCO, CALIFORNIA / Content Syndication Services / — OpenAI has launched a mobile preview of Codex inside the ChatGPT app, extending access to its AI coding tool to iOS and Android users. The rollout allows developers to monitor, guide, review and approve Codex coding tasks from a phone while the work continues on a connected host machine. The feature is available through the existing ChatGPT mobile app rather than as a separate Codex mobile application.
The mobile preview lets users start new Codex tasks, follow active work, inspect results and approve commands in real time across devices. Codex can support software development work including feature implementation, codebase questions, bug fixes and pull request preparation. The mobile interface is designed for remote oversight of those workflows, giving users access to active coding sessions when they are away from a desktop setup.
OpenAI said the Codex mobile experience is rolling out in preview across all ChatGPT plans, including Free and Go, in supported regions. Users need the latest ChatGPT mobile app and the Codex app on macOS to use the feature. For workspace accounts, administrators may need to enable remote control access before users can connect from a phone.
Mobile access expands Codex workflows
The system works by connecting the ChatGPT mobile app to a Mac running Codex, with the coding agent continuing to operate from the host environment. Projects, files, credentials, plugins, skills and configuration remain tied to the connected machine. From the phone, users can view task activity, review diffs, check terminal output and approve actions without moving the development environment onto the mobile device.
OpenAI’s documentation describes the mobile app as a way to start, steer, approve and review Codex work on a connected host. The setup keeps local development context on the computer where Codex is running, while giving the user a remote control layer through ChatGPT. The company said support for connecting phones to the Codex app on Windows is planned after the initial macOS-based rollout.
Preview rollout reaches iOS and Android
The launch follows OpenAI’s earlier release of the Codex app for desktop use, which positioned the tool as a workspace for managing coding tasks across projects. Codex has been built to operate with repositories and development environments, allowing users to run commands, inspect changes and manage code-related work. The new mobile preview extends those controls to smartphones through ChatGPT on iOS and Android.
The update adds a mobile access point for one of OpenAI’s developer-focused products as AI coding assistants become more integrated into software workflows. Codex remains a tool for managing coding-agent tasks rather than a replacement for a full development workstation on a phone. The latest rollout makes ChatGPT mobile a control interface for Codex sessions already running on supported connected machines.