OpenAI is expanding the reach of its AI coding assistant, Codex, by bringing it directly into the ChatGPT mobile app. The new update allows users to stay connected with Codex even when they are away from their computers, making it easier to manage coding tasks, review progress and approve actions from a smartphone.
The company says the mobile experience is designed to work smoothly with the devices where Codex is already running, including laptops, Mac minis, devboxes and remote environments.
One of the biggest highlights is the ability to continue ongoing work from anywhere. Users can check active threads, review outputs, approve commands, switch models and even start entirely new tasks directly from the ChatGPT mobile app.
OpenAI says Codex keeps all files, credentials, permissions, and local setups on the connected machine itself. Meanwhile, the phone app receives live updates such as terminal outputs, screenshots, test results, code diffs, and approval requests.
The system also uses a secure relay layer to keep trusted machines connected across devices without exposing them directly to the public internet.
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According to OpenAI, the mobile version can help developers in several real-world situations. For example, users can start debugging an issue while away from their desk, approve a coding decision during travel, or quickly prepare summaries and briefings before meetings.
Users can also send new ideas or tasks to Codex from their phone, allowing the assistant to begin working on them before they return to their computer.
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Codex support inside the ChatGPT mobile app is currently rolling out in preview for both iOS and Android users. OpenAI says the feature will be available across all plans, including Free and Go, in supported regions.
To access the feature, users need to update both the ChatGPT mobile app and the Codex app on macOS. Support for connecting with Windows systems will arrive later.
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