OpenAI Introduces Codex Integration in ChatGPT Mobile App
On Thursday, May 14, OpenAI unveiled the much-anticipated Codex integration within the ChatGPT mobile application, enabling developers to oversee and manage coding workflows directly from their smartphones. This update is now available in preview mode across all ChatGPT subscription tiers on both iOS and Android platforms.
You’ve been asking for this one…
Now in preview: Codex in the ChatGPT mobile app.
Start new work, review outputs, steer execution, and approve next steps, all from the ChatGPT mobile app. Codex will continue to operate on your laptop, Mac mini, or dev box. pic.twitter.com/9i2Jckjt9z
— OpenAI (@OpenAI) May 14, 2026
The Mobile Link to Codex
Codex, the AI-driven coding assistant that OpenAI initially launched approximately a year ago, is now accessible via the ChatGPT app on mobile devices.
It is imperative to note that Codex does not operate locally on the mobile device. Rather, the ChatGPT app serves as a conduit, facilitating interaction with the developer’s preconfigured environment—be it a physical machine like a Mac mini or a cloud-hosted workspace, as reported by Engadget.
Consequently, all files, credentials, and permissions remain securely anchored on the machine where Codex is actively functioning.
The ChatGPT app updates the mobile device with essential status notifications, screenshots, and test results, while also permitting users to input new prompts for subsequent executions.
This functionality transcends mere remote control; it enables users to navigate across all threads, review outputs, approve commands, modify models, or initiate new tasks seamlessly from their mobile devices.
– OpenAI
Ensuring Secure Access with a Relay Layer
To maintain accessibility to local machines from various devices and to safeguard their identities from public exposure, OpenAI has instituted a “secure relay.”
This relay mechanism synchronizes the active session state and context across all devices linked to a user’s ChatGPT account.
A developer can commence a Codex task from home or the office, depart for the day, and receive alerts on their phone when the agent requires input to proceed.
To utilize these capabilities, developers must update both the ChatGPT app on their smartphones and the Codex application on their Macs.
It is worth mentioning that OpenAI plans to introduce Windows support for mobile Codex connectivity in the near future.
Codex Mobile: A Strategic Move Against Claude Code?
Recently, OpenAI enhanced Codex’s capabilities, allowing it to execute tasks in the background on desktop environments. Additionally, earlier in May, a Chrome extension was launched to permit the agent to operate within live browser sessions.
In contrast, Anthropic has provided mobile access to its Claude Code tool since the previous fall via a feature named Remote Control, enabling users to supervise coding sessions through their phones.
As reported by Cryptopolitan, Codex, at its initial release in ChatGPT in May 2025, was designed to tackle tasks including feature development, codebase inquiries, bug fixing, and proposing pull requests in isolated cloud environments. The latest mobile integration broadens its functionality without altering the underlying architecture.
Based on information from TestingCatalog, the lack of native mobile control has been a common grievance among Codex users on GitHub and the OpenAI developer forum, with many citing it as a reason for migrating to competing platforms.
Thursday’s announcement from OpenAI signifies an escalating rivalry with Anthropic regarding which coding platform will become the standard for professional developers. Furthermore, it aligns with the company’s broader aspirations for an integrated application ecosystem.
In March, OpenAI confirmed its initiative to develop a unified desktop application that amalgamates ChatGPT, Codex, and its Atlas web browser into a singular product.
Source link: Cryptopolitan.com.
