The Windows release follows the **macOS Codex app launch, which crossed 1 million downloads in its first week.
Developers can run multiple AI agents across projects, automate repetitive coding tasks and connect tools using Skills.
The app supports PowerShell, Windows sandbox and Windows Subsystem for Linux (WSL), allowing flexible development workflows.
OpenAI has introduced a native Windows version of the Codex application, bringing its AI-powered coding assistant to one of the most used developer platforms. This new app is made to help developers build, test and ship software via AI agents while staying in the familiar Windows tools and workflows.
The Windows release follows the recent launch of the Codex desktop app for macOS, which crossed more than one million downloads in its first week. The company stated that the Windows version has also been strong, with over 500,000 developers joining the waitlist before the launch.
With the Codex Windows app, the company will allow developers to run multiple AI agents across different projects simultaneously, automate repetitive coding tasks and connect agents with development tools using a feature called Skills. The app also allows the developers to review and guide the work produced by the agents without losing project context.
The company also stated that adoption of Codex has surged in 2026, with weekly active users tripling to over 1.6 million. Companies ranging from startups such as Ramp and Harvey to large enterprises including NVIDIA, Rakuten and Cisco are already using the platform, the company stated in its blog post.
The Windows version runs with PowerShell and Windows sandbox support, allowing the developers to run agent tasks in isolated environments. The users can also configure the app to operate within Windows Subsystem for Linux (WSL) for Linux-based development workflows.
The developers can also customise their setup by choosing the preferred editors, such as Visual Studio or Visual Studio Code and selecting different integrated terminal options, including PowerShell, Command Prompt, Git Bash, or WSL.
The company further added that the app works across different platforms, including desktop, command-line interface, IDE extensions and cloud services, with access tied to a single account. The Codex Windows app is now available through the Microsoft Store and supports users across ChatGPT Free, Go, Plus, Pro, Business, Enterprise and Edu plans.
