- Codex is now available on both Windows and Mac
- OpenAI had to build “the first native Windows agent sandbox”
- Codex app supports more IDEs including Visual Studio
OpenAI has finally released a Windows version of its Codex app after unveiling it on Monday, to give more users access to GPT-based coding following the release of the macOS version in February 2026.
A March 4 “Windows Wednesday” update to the previous announcement confirms that Microsoft fans now have access to the same desktop experience, hence the company’s promise of “[make] application available on Windows” became a reality in about a month.
“Get the full Codex app experience on Windows with a native agent sandbox and support for Windows developer environments in PowerShell,” OpenAI added in a separate X post.
OpenAI’s Codex app now available on Windows
The creator of ChatGPT explained that the Codex app allows users to work with multiple agents simultaneously, manage long-running tasks, review code differences centrally, and natively integrate with PowerShell without relying on WSL or virtual machines.
OpenAI also noted that to create the app, it had to create “the first native Windows agent sandbox” with “OS-level controls such as restricted tokens, file system ACLs, and dedicated sandbox users.”
The company also added support for several IDEs, including Visual Studio, Rider + PhpStorm, Git Bash, GitHub Desktop, Cmder, WSL, and Sublime Text, “in addition to many that were already supported on Mac,” according to a separate X post by Developer Experience worker Dominik Kundel.
The Codex app was initially released for Mac with GPT-5.2-Codex, but an update to GPT-5.3-Codex days later improved speed, agent capabilities, and baseline performance. A few days later, a smaller version of GPT-5.3-Codex-Spark was released.
As with the Mac app, the Windows app and the entire Codex experience are free on the Free, Go, Plus, and Pro subscriptions, but the lower and free tiers are more restricted in terms of tokens.
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