Antigravity SDK v0.1.11 upgrades the default model to Gemini 3.7 Flash and adds session-level budget enforcement. Vertex AI Express Mode simplifies authentication for headless deployments. Autonomous agent behavior is now the default; switch to interactive mode via CapabilitiesConfig. CLI v1.1.12 adds artifact heading outlines for navigation and read-only slash commands in print mode. Antigravity 2.0 v2.7.1 enables project deletion, side-by-side image diff previews, and improved conversation grouping options.