The Gemini CLI Transition and the Illusion of Free Tools

The Disconnect Between Repository and Service

Google transitioned users from the open-source Gemini CLI to a closed-source binary, Antigravity CLI, on June 18, 2026. Despite the shutdown of free, Pro, and Ultra tier access, the Gemini CLI repository remains active, receiving updates as recently as September 2026. The README for the original project still incorrectly advertises a free tier of 60 model requests per minute and claims the tool is fully open-source under the Apache 2.0 license. No deprecation notice exists on the page, and it continues to solicit community contributions.

The Technical and Legal Reality

While the Gemini CLI was a TypeScript monorepo utilizing React and Ink for its terminal interface, the replacement Antigravity CLI is a closed-source Go binary. The Antigravity CLI repository contains no source code, consisting only of a README, a changelog, and a 25 MB demo GIF. The legality of this transition relies on the Contributor License Agreement (CLA) signed by external contributors, which grants Google the right to use and redistribute contributions regardless of how the project evolves. While the Apache 2.0 license protects the existing code for forking, it does not guarantee access to the underlying Google servers or the API quota that made the tool functional for free users.

The Nature of the Shutdown

The Gemini CLI project was not archived, and version 0.58.0 was released on September 1, 2026. The tool remains functional for users with an enterprise Code Assist license or a paid API key. The shutdown primarily affected the free tier, demonstrating that while companies may provide open-source code, they retain total control over the service infrastructure and billing models that define the tool's utility.