Antigravity by Google

Google Antigravity is Google's latest experiment in building an agentic development platform, launched alongside Gemini 3. The platform is built around the concept of autonomous agents that can plan, execute, and explain their work. It emerged from Google's acquisition of the Windsurf team for $2.4 billion in July 2025, bringing the team into Google DeepMind where they delivered Antigravity within just four months. The IDE represents a shift toward what Google calls an "agent-first" architecture, where developers act as architects, collaborating with intelligent agents that operate autonomously across the editor, terminal, and browser.

Antigravity introduces several notable features in its design. The application has three "surfaces"—an agent manager dashboard, a traditional VS Code-style editor, and deep integration with a browser via a Chrome extension. This browser integration allows agents to directly test web applications they're building. The agents produce "artifacts," which are deliverables in formats easier for users to validate than raw tool calls, including task lists, implementation plans, screenshots, and browser recordings. The system forces agents to show their work, allowing developers to audit every decision, refine plans, or stop agents in real time. The platform also supports multiple AI models beyond Gemini 3, including Claude Sonnet 4.5 and OpenAI's GPT-OSS.

Google has made the Antigravity public preview completely free, with no usage fees and access to Gemini 3 Pro built in. The platform is available for Mac, Windows, and Linux with what Google calls "generous rate limits" for Gemini 3 Pro usage. Performance-wise, Gemini 3 Pro achieved 76.2% on SWE-bench Verified—a benchmark measuring coding agents' ability to solve real-world GitHub issues—and 54.2% on Terminal-Bench 2.0.