Getting Started with Codex Desktop — OpenAI's Cross-Device Coding Agent

Reviewed and verified by FeiYueh · Last verified 2026-10-13

Codex Desktop is the desktop coding agent OpenAI launched in February 2026. Its focus is on "directing multiple agents to handle tasks in parallel," rather than

Codex Desktop is the desktop coding agent OpenAI launched in February 2026. Its focus is on "directing multiple agents to handle tasks in parallel," rather than completing your code line by line. It links the desktop app, CLI, IDE extension, and mobile through a single ChatGPT account, so you can assign a task on your computer, track its progress on your phone, and finally return to the desktop to review the diff before merging. The key to getting started is setting up "task breakdown" and "permission modes" first; the tool itself has a very low learning curve. What Is Codex Desktop: From Autocomplete Tool to Task Agent Codex Desktop is positioned as an "agent command center": developers assign tasks, multiple Codex agents write code and run tests in their own isolated environments, and humans only review the results. According to OpenAI's official announcement , the app is designed to let developers manage multiple coding agents simultaneously over long periods. Each project has its own thread, and when an agent finishes, it returns its work as a diff for review. The difference from traditional AI autocomplete tools lies in the unit of work. For autocomplete tools, the unit is "a line" or "a function"; for Codex Desktop, the unit is "a task," such as "change the login flow to support Google OAuth and add unit tests." The agent reads the repo on its own, plans the steps, modifies multiple files, runs commands, and finally delivers a reviewable set of changes. The Codex product line has rolled out in stages since 2025: first came the open-source Codex CLI, then the cloud agent inside ChatGPT and the IDE extension, and finally the desktop app. For a complete timeline, see Wikipedia's OpenAI Codex (AI agent) entry . Growth Rate: Codex Adoption by the Numbers Codex's user growth in 2026 is the main reason it deserves serious evaluation. The following figures come from official announcements and mainstream tech media: "The Codex App launched on Windows on March 4, 2026,

Reviewed and verified by FeiYueh · Last verified 2026-10-13. Independently maintained — not AI-generated boilerplate.