OpenAI has rolled out the Codex desktop app for Windows. The tool debuted on macOS last month and will now enable developers on Windows to access its agentic coding capabilities.

OpenAI has launched the Codex app for Windows, bringing its AI-powered coding assistant to developers with native sandboxing, multi-agent workflows.

GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.

In a post on X (formerly known as Twitter), the AI giant announced that the Codex app is now available on Windows, adding, “Get the full Codex app experience on Windows with a native agent sandbox and ...

OpenAI launches Codex for Windows, letting developers run multiple AI coding agents, automate testing tasks, and sync projects seamlessly across Mac and Windows.