Gemini Spark and Antigravity CLI Transition

Google’s upcoming Gemini Spark, announced at I/O, positions itself as a personal AI agent that natively connects to Gmail, Calendar, Drive, Docs, Sheets, Slides, YouTube, and Maps. The product runs on Gemini 3.5 Flash and the Antigravity platform, which is a desktop app, CLI tool, SDK, and VS Code‑based IDE. Gemini Spark operates in a fully managed, secure runtime on Google Cloud, with each task executing in a fresh, isolated, ephemerally VM to prevent data leakage.

Traffic is routed through a secure Agent Gateway that enforces Data Loss Prevention policies, while user credentials remain encrypted and never exposed to the agent. Google also announced that the open‑source Gemini CLI will cease to work with AI subscription plans on June 18th, replaced by the closed‑source Antigravity CLI. The Antigravity CLI is built on a bundled Go binary and is available on GitHub. The transition reflects Google’s shift toward a unified Antigravity ecosystem for all its agent‑based tools. Organizations planning to adopt Gemini Spark should review the security documentation and migrate from the old Gemini CLI before the June deadline.