Gemini CLI Retires June 18, Replaced by Antigravity CLI
Google DeepMind
On June 18, 2026, Google's Gemini CLI stopped serving requests for Google AI Pro/Ultra subscribers and free users, completing the transition to Antigravity CLI — Google's agent-first development platform announced at I/O 2026 in May. Antigravity CLI is rewritten in Go for faster execution, supports asynchronous multi-agent workflows, and replaces Gemini CLI's hooks and extensions with a new plugin model. Notably, Antigravity CLI is not open source, unlike the Apache 2.0-licensed Gemini CLI.
Why it matters
This is a forced migration affecting all free and consumer-tier Gemini CLI users on the exact day of this digest. The closed-source status change and architectural differences create significant friction for teams with automation built on Gemini CLI.
Importance: 3/5
Breaking change affecting all Gemini CLI users; forced migration to closed-source replacement on the same day.