Google I/O 2026 Developer Keynote Highlights Gemini 3.5 and Antigravity 2.0

Google I/O 2026 delivered a developer keynote packed with groundbreaking announcements, primarily focusing on the evolution of AI. A central theme was the transition from AI that merely assists to AI agents capable of independently navigating complex tasks across entire workflows. Headlining these advancements were the new Gemini 3.5 series of models and the upgraded Antigravity 2.0, Google's agent-first development platform. Antigravity 2.0, along with the new Antigravity CLI, provides powerful surfaces for significant productivity gains in orchestrating and building agents. Google AI Studio has also received new integrations, including native Kotlin support to streamline the development of Android applications. Furthermore, Managed Agents in the Gemini API aim to remove infrastructure setup friction, delivering the power of the Antigravity agent harness as managed services. This holistic approach brings together Google's models, infrastructure, and platforms to simplify the creation of sophisticated AI-powered applications. For Android developers, new tools and skills were introduced to help agents build modern and performant applications. This includes the ability for agents to handle tasks like downloading the Android SDK and running apps on devices, supporting high-quality Android app creation with any agent, LLM, and tool. Google also open-sourced Android skills to guide LLMs in executing best practices for complex workflows, such as migrating to Jetpack Compose. The introduction of Android Bench, an LLM leaderboard for Android development tasks, further emphasizes Google's dedication to advancing AI that understands the nuances of Android development.