Google Antigravity

Google Antigravity is a new agentic coding IDE tied to Gemini models, combining a VS-Code-style editor with an agent dashboard and a browser-automation extension. It introduces “artifacts,” auto-generated Markdown task and walkthrough documents, enabling agents to plan, build, and test apps directly inside the environment.

https://simonwillison.net/2025/Nov/18/google-antigravity