Google just killed Gemini CLI. Your terminal agent is now a closed-source enterprise product.

Google pulled the plug today.

Gemini CLI — the open-source terminal agent with 105K GitHub stars and 6,000+ merged community pull requests — stopped serving free, Pro, and Ultra users on June 18, 2026.

The replacement is Antigravity CLI. It's closed-source. It's built in Go. And it requires Google Cloud billing.

This is not a rebrand. It's a bait-and-switch at scale.

Google spent a year accepting code from hundreds of independent contributors on an Apache 2.0 repo. They merged those contributions into a product that now only serves enterprise customers with Standard or Enterprise licenses. The open-source repo stays up — but only for enterprise maintenance. Free-tier developers get nothing.

The GitHub discussion has 271 thumbs-down reactions. One contributor asked if their 27-commit PR was just free labor for an enterprise product. Another called it "bait and switch."

Here's what changed architecturally:

Antigravity CLI is written in Go (Gemini CLI was Node.js/TypeScript). It supports async background workflows and multi-agent orchestration — features Gemini CLI lacked. But it dropped OAuth authentication, removed AI Studio API key support, and introduced weekly rate limits instead of daily ones.

For developers running Gemini CLI in CI/CD pipelines, GitHub Actions, or custom automation scripts: those pipelines broke this morning. There is no grace period.

The migration path is clear but uncomfortable. Install Antigravity CLI via `agy`, authenticate through Google Cloud, and accept the new rate limits. Or do what the community is already doing: switch to OpenCode (172K stars, 75+ providers, model-agnostic) or route through the Gemini API directly via SDK.

Audit your CI/CD pipelines today. Check for any scripts calling the `gemini` binary. Replace them before your next deploy.

SOURCE: https://developers.googleblog.com/an-important-update-transitioning-gemini-cli-to-antigravity-cli/
VERIFIED: Google Developers Blog (May 19, 2026), GitHub Discussion #27274 (google-gemini/gemini-cli), GitHub Repo EOL notice (DioNanos/gemini-cli-termux)
SIGNAL: Google just demonstrated the endgame for "open-source" AI developer tools: accept community labor, build adoption, then extract value into a closed enterprise product. Every developer using a free-tier agent tool should audit their dependency chain now.