Google Accidentally Reveals New AI Assistant App: COSMO
On May 1, Google unintentionally published an app called COSMO on the Play Store, only to remove it within hours. This experimental AI assistant for Android devices seems to have leaked just before the much-anticipated Google I/O 2026 event, hinting at exciting developments to come.
COSMO was sourced from Google Research, with a package name suggesting its experimental nature. The app, weighing in at 1.13 GB, runs on a local model called Gemini Nano. It includes features like a settings menu with three different usage modes: an offline option, a server-based mode for enhanced functionality, and a hybrid that switches depending on your connection.
Packed with Unique Features
COSMO came with 14 different “Skills,” not all activated by default. Some standout features include a List Tracker, a Calendar Event Suggester, and a Browser Agent powered by Google’s own Mariner tool. It also offered a Deep Research mode for gathering complex information and a Conversation Summary feature to help users keep track of discussions by summarizing past topics. Interestingly, the app utilized Android’s AccessibilityService API, although that feature wasn’t fully operational in testing. There was even a setup for Voice Match.
Anticipation for Google I/O 2026
The app’s appearance appeared to be accidental, as the listing had images that weren’t displayed properly, and its availability seemed inconsistent across devices. Tech site 9to5Google was the first to catch the app before it vanished. As for how COSMO will fit in with Google’s existing offerings, especially the Gemini app, remains to be seen. All eyes will be on the Google I/O event starting on May 19, where more details are expected to be revealed.
