Google sunsets Gemini CLI on June 18, folds it into Antigravity platform

Google is retiring Gemini CLI and the Gemini Code Assist IDE extensions for individual and free-tier users on June 18, 2026, redirecting them to Antigravity CLI, a Go-rewritten terminal client that ships alongside the broader Antigravity 2.0 agent platform announced at I/O 2026. The new CLI shares a server-side agent harness with Antigravity’s desktop app, adds asynchronous multi-agent orchestration for background refactors and research, and carries forward Skills, Hooks, Subagents, and Extensions (rebranded as plugins), though Google concedes there is no immediate one-to-one feature parity.

The cutoff hits Google AI Pro, Ultra, and free Gemini Code Assist users, and halts new Gemini Code Assist for GitHub installs on organizations the same day, with request serving wound down in the weeks after. Paying customers on Gemini Code Assist Standard, Enterprise, or Google Cloud-backed GitHub deployments keep their existing access, and Gemini CLI continues to work against paid Gemini and Gemini Enterprise Agent Platform API keys.

The move reflects Google’s bet that single-agent terminal tooling is already outdated and that developers want a unified backend behind both CLI and IDE surfaces. For teams with Gemini CLI baked into pipelines, hooks, or CI scripts, the roughly 30-day window before the free-tier shutoff is short, and migration to Antigravity plugins will need testing before the deadline.