Google Antigravity is an AI-powered integrated development environment (IDE) launched in November 2025 alongside Gemini 3. Built as a fork of Visual Studio Code, it introduces an agent-first approach to software development where autonomous AI agents plan, execute, and verify complex coding tasks across the editor, terminal, and a built-in browser. The platform features two distinct interfaces: the Editor View for traditional AI-assisted coding with tab completions and inline commands, and the Manager Surface for spawning, orchestrating, and observing multiple agents working asynchronously. Agents generate tangible Artifacts such as task lists, implementation plans, screenshots, and browser recordings so developers can verify progress at a glance. Antigravity supports multiple AI models including Gemini 3.1 Pro, Anthropic Claude Sonnet 4.5, and OpenAI GPT-OSS, allowing developers to choose the best model for each task. The platform is available on macOS, Windows, and Linux, and integrates with Google AI Studio for a unified prompt-to-agent pipeline.