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.