Google may have accidentally given us an early look at its next big AI project. On May 1, the company quietly published a new app called COSMO on the Play Store—but just as quickly, it disappeared within a few hours. While it didn’t stay live for long, it revealed enough to spark serious curiosity ahead of Google I/O 2026.
The app was described as an “experimental AI assistant application for Android devices,” which already hints at something ambitious. What makes it even more interesting is its timing—just weeks before Google’s biggest annual event. It feels less like a coincidence and more like an early teaser that slipped out before the official reveal.
COSMO was listed under the package name com.google.research.air.cosmo, suggesting it came directly from Google Research. However, instead of being released through a testing or labs channel, it appeared on Google’s main Play Store account, making the situation even more unusual.
One standout detail was the app’s size—around 1.13 GB—which is quite large for a mobile app. That’s because it included a full Gemini Nano model built directly into the app. This means users could run AI features locally on their device without needing constant internet access.
Inside the app, users could choose between three different AI modes:
- Nano-only mode, which works completely offline
- A server-based “PI” model (likely short for Personal Intelligence)
- A hybrid mode that switches between on-device and cloud processing depending on connectivity
This flexibility suggests Google is working toward a smarter balance between privacy, speed, and performance.
But what really makes COSMO exciting is the range of features—or “skills”—it was testing. The app listed 14 different skills, though not all were active by default. Some of the most notable ones included:
- A List Tracker for managing tasks
- A Calendar Event Suggester to help plan your schedule
- A Browser Agent powered by Google’s internal automation tool, Mariner
There was also a Deep Research mode, designed to generate detailed, multi-source reports for complex queries—something that could redefine how people search for information. Another useful feature was Conversation Summary, which automatically created quick recaps of your previous chats when you switched topics.
Interestingly, COSMO also tapped into Android’s AccessibilityService API, giving it the ability to access and interact with on-screen content. While this feature wasn’t fully functional during testing, it hints at powerful possibilities for deeper device integration in the future.
Even though COSMO was taken down quickly, it gives us a clear signal: Google is actively building a next-generation AI assistant that goes far beyond what we currently have. If this was just a preview, the official announcement at Google I/O 2026 could be a major step forward in AI-powered experiences.
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