Codex Moves Into the ChatGPT Desktop App With Cross-Repo Work and In-Sidebar PR Review

OpenAI Codex Changelog·high signal

Alongside the July 9 GPT-5.6 rollout, OpenAI folded Codex directly into the ChatGPT desktop app (macOS/Windows), adding faster Computer Use, inline Markdown/code editing with annotations, GitHub PR review in the sidebar next to the diff, and the ability to work across multiple repositories in one project. This is distinct from the model-tier news: the agent surface itself is consolidating into the chat client. Builders evaluating Codex vs. Claude Code should note the workflow now assumes multi-repo, review-in-place operation rather than a single-repo CLI loop.