Google Antigravity

Google Antigravity rebuilds the IDE around agents rather than bolting an agent onto an editor. A desktop application (a heavily modified VS Code fork), its center of gravity is the Manager — a mission-control surface where you spawn, orchestrate and watch multiple agents work asynchronously across editor, terminal and browser. Agents report through Artifacts (plans, screenshots, browser recordings) you can comment on like a Google Doc. It is model-agnostic: it ships with Gemini 3 Pro (80.6% SWE-bench Verified) but also runs Claude Sonnet 4.5 and open models, so its score is really a dial. Includes a built-in browser and an Agent SDK plus MCP. Runs on macOS, Windows and Linux (public preview, 2.0). Free for individuals, with paid Google AI Pro and a $100/month AI Ultra tier (5× higher limits). Best for: running a fleet of agents from mission control, avoiding single-model lock-in, or simply starting for free.