OpenAI’s Codex is now in the ChatGPT mobile app

OpenAI is going to let users access Codex, its desktop AI tool that can write code and use apps on your computer, from the ChatGPT app on your phone. Following the surge in popularity for Anthropic’s Claude Code, OpenAI has been working quickly to try and catch up, including by cutting back on “side quests,” shutting down projects like the Sora video-generation tool, and focusing on growing its enterprise business. The company’s push included the recently released major update for Codex that lets it operate apps on macOS — a potentially major step as part of its ambitions to make a desktop “superapp.” Codex in the ChatGPT mobile app lets you use your phone to tell Codex on your computer to work on a task. With your phone, you can “work across all of your threads, review outputs, approve c…