Google I/O 2026: Gemini 3.5 Flash, Omni models, and Android AI coding

google i/o 2026 focused on the rollout of gemini 3.5 flash, replacing previous models as the default engine for the gemini app and search ai mode due to its speed and advanced coding capabilities. the event introduced the gemini omni family, beginning with omni flash, which accepts multimodal inputs to generate video clips. google also unveiled a new feature in AI studio that allows 'vibe-coding' of complete native android apps, letting users preview apps in an embedded emulator, export to github or android studio, and eventually publish to the play store. further updates included gemini spark, an always-on background agent powered by gemini 3.5 flash that integrates with workspace apps and third-party services.