Google Kills Gemini CLI Today — Antigravity CLI Takes Over

Today marks the end of Google’s Gemini CLI. As of June 18, 2026, the popular terminal-based AI coding tool stops accepting requests for individual and free-tier users, replaced entirely by Google’s new Antigravity CLI.

The transition was announced at Google I/O on May 19, giving developers roughly 30 days to migrate. If you’ve been putting it off, today is the deadline.

What Is Antigravity CLI?

Antigravity CLI is Google’s next-generation terminal interface for AI-assisted coding. Built from scratch in Go, it’s designed around a concept Google calls “multi-agent orchestration” — the ability to run multiple AI agents simultaneously, each handling different parts of a complex task.

Key features include:

• Multi-agent workflows — orchestrate several agents working in parallel on different subtasks
• Voice commands — speak to your terminal, similar to voice features in Gmail and Docs
• Gemini 3.5 Flash — powered by Google’s latest model, co-developed using Antigravity itself
• Antigravity SDK — build custom agents and connect them to Google Cloud projects

“Gemini CLI proved the terminal could be an incredible interface for agentic tasks, but your needs shifted,” Google said. “You now require multiple agents communicating with each other to split up the work and solve complex problems.”

Who Is Affected

If you use Gemini CLI with a free account or Google AI Pro/Ultra subscription, your tool stops working today. Enterprise customers with paid Gemini Code Assist licenses are not affected and can continue using the legacy CLI.

The Gemini Code Assist IDE extensions (for VS Code and JetBrains) also stop for individual users on the same timeline.

How to Migrate

Installation takes one command: curl -fsSL https://antigravity.google/cli/install.sh | bash. Authentication switches from manual API keys to browser-based OAuth, with tokens stored in your system’s native keyring.

One notable gap: Gemini CLI’s ACP stdio mode — a JSON-RPC interface used by many orchestration bridges — is not available in Antigravity CLI at launch. If your workflow depends on that interface, you’ll need to find an alternative approach.

What This Means for You

If you relied on Gemini CLI for coding tasks, the migration is straightforward but mandatory. The new tool is more powerful, particularly if you want to run complex multi-step tasks from your terminal.

For those evaluating AI coding tools more broadly, Antigravity CLI joins an increasingly competitive field that includes Claude Code, GitHub Copilot CLI, and others. Google is betting that multi-agent orchestration in the terminal is where developer workflows are heading — and they’re forcing the transition today.