What is Project Aion? Inside Microsoft’s secret agentic Copilot OS incubation project that runs on Windows and Android

Microsoft has developed a working prototype of an AI-powered operating system codenamed Project Aion, according to leaked materials from 2024. The project demonstrates an ambitious effort to create a platform-agnostic Copilot OS derived from Microsoft Edge, capable of running on both Windows and Android devices. The prototype reached a functional stage before the leak, providing insight into how the experience looked and operated.

The OS is designed specifically for web-based and agentic experiences, positioning Microsoft’s Copilot AI assistant as the central interface. While details on the project’s current status remain unclear, the leaked materials confirm that Aion represented a significant internal R&D initiative aimed at reimagining the operating system around AI-powered agent capabilities.

The revelation highlights Microsoft’s continued investment in AI-integrated computing experiences, following the company’s broader push to embed Copilot across its product ecosystem. The cross-platform nature of the prototype—supporting both Windows and Android—suggests Microsoft’s intent to extend its AI OS vision beyond traditional PC environments into the mobile space.

Sources