Google released Anti-gravity, a new AI code editor powered by Gemini 3, featuring a planning mode that generates detailed implementation plans before executing code changes. A demonstration shows how a single prompt transformed a poorly designed character creation page into a multi-step wizard with improved UX, including navigation, state management, and review functionality. The tool offers multiple AI models (Gemini 3 Pro, Claude Sonnet 4.5, GPT) and is currently free with unclear rate limits, though pricing plans remain undefined.