Google I/O pushes Gemini 3.5 and Antigravity as an agent platform

Google's I/O 2026 announcements were less about one model and more about making agentic workflows a first-class developer surface. Google said Gemini 3.5 Flash is generally available through Google Antigravity, the Gemini API in AI Studio, and Android Studio, while managed agents are powered by the Antigravity harness and exposed through the Interactions API. That framing matters because Google is packaging model capability, tool orchestration, and deployment into one platform story. The competitive question is whether developers choose Google's agent stack because it has better integration with Android, Search, Workspace, and Cloud, or whether they keep spreading workloads across OpenAI, Anthropic, open models, and cloud-specific inference services.

Key details: Google I/O 2026, Gemini 3.5 Flash, Google Antigravity, Interactions API, Google AI Studio, Android Studio.

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