Codex Joins the ChatGPT Desktop App on macOS and Windows
OpenAI has integrated Codex into the ChatGPT desktop app on macOS and Windows, adding inline code editing, GitHub PR reviews in the sidebar, multi-repo support, and a faster Computer Use mode powered by GPT-5.6.
OpenAI announced the update through its Codex Releases account on X on July 9, confirming that Codex, its AI coding agent, is now built into the ChatGPT desktop app rather than living as a separate tool. The change lets developers move between chat, code review, and editing without switching applications.
The update adds three things developers had been asking for: inline Markdown and code editing directly in the desktop app, GitHub pull request review from the sidebar instead of a separate browser tab, and support for multi-repo projects, so a single Codex session can span more than one codebase.
OpenAI also says Codex's Computer Use mode now runs faster, thanks to GPT-5.6 (GPT-5.6 just made every dollar in AI count harder), and that mobile connection reliability has improved, a smaller fix aimed at developers who start a task on desktop and check on it from their phone.
The move continues OpenAI's push to fold Codex into its broader agent lineup rather than keep it as a standalone product (The quietest shift in enterprise AI this year is a bet…). Full details on the update are available in OpenAI's Codex changelog.