On May 1, 2026, Google inadvertently published an app called COSMO to the Play Store, revealing a powerful on-device AI agent. The app, built around Google's Gemma Nano model, can run entirely offline and perform tasks such as summarizing conversations, browsing the web on your behalf, writing documents, managing photos, and conducting deep research.
COSMO's capabilities raise significant privacy concerns. It includes features reminiscent of Microsoft's Recall, allowing it to monitor and summarize your chats and screen activity. The app offers three privacy modes — hybrid, local, and server-only — giving users some control over data processing.
Security researchers quickly identified the app, which weighs 1.13 GB, and began analyzing its features. The leak is being called the "Google oopsie" and has sparked debate about the future of AI agents that have continuous access to user data.
While Google has not officially commented on the leak, the app's appearance on the Play Store suggests the company is quietly testing a new generation of AI-powered personal assistants that could redefine user interaction with devices — for better or worse.