Google I/O 2026: Gemini 3.5 Flash, Antigravity Agent Platform, WebMCP

Google's I/O keynote (May 19-21) centered on the "agentic Gemini era." Key developer announcements: Gemini 3.5 Flash (rivals flagship models at Flash speeds, outperforms Gemini 3.1 Pro on coding/agentic benchmarks), Gemini Omni (multimodal creation from any input), the upgraded Antigravity agent-first development platform with subagents/hooks/async task management, and WebMCP — a proposed open web standard for exposing browser-based tools to AI agents, with an experimental origin trial in Chrome 149.

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Sources: Google Blog · Developers Keynote · 9to5Google