Google I/O 2026 delivered some genuine shockers. Gemini 3.5 Flash outperforms Gemini 3.1 Pro on nearly all benchmarks while running 4-12x faster, optimized for multi-hour agentic coding. Meanwhile, AI legend Andrej Karpathy joined Anthropic's pre-training team, and Google unveiled the biggest Search overhaul in 25+ years with always-on AI agents that search proactively for you.