Everything Google announced at I/O 2026: Gemini 3.5, Omni & Search that’s changed forever

Google’s I/O 2026 keynote was one long bet on agents doing things for you. Gemini 3.5 Flash is now the default across Search and the Gemini app, faster and cheaper than what it replaced. Spark is the personal assistant that keeps working when your laptop doesn’t. Search got its biggest redesign in 25 years. And Omni generates editable video from whatever you throw at it.