Google Retires the Gemini CLI Today, Pushing Developers to Antigravity

Developers who lean on Google's command-line AI tooling are waking up to a deadline. As of today, 18 June, the Gemini CLI and the Gemini Code Assist extensions stop serving requests for people on Google AI Pro and Ultra plans, along with anyone using Gemini Code Assist free of charge as an individual. In their place Google is putting the Antigravity CLI, now available to everyone.

Google flagged the change back in May, so the date is not a surprise. The scope still catches people out. This is a retirement, not a quiet version bump, and it lands on the workflows that hobbyists, students and solo developers built on a free tool.

What is actually changing

The Gemini CLI was Google's open-source answer to terminal-based AI assistants, a way to query models and run agentic tasks without leaving the command line. Antigravity is the bigger idea it folds into: an agent-first development platform with a server-side harness and a new terminal client. The CLI is written in Go and built around multiple agents working in parallel, which Google says makes it faster than what came before.

For anyone migrating, the practical questions are about continuity, and the answers are mostly reassuring. The features that gave the Gemini CLI its character carry over: agent skills, hooks, subagents and extensions, the last now repackaged as Antigravity plugins. The catch Google is honest about is parity. Not every feature arrives on day one at the same fidelity, so a script or pipeline wired tightly to the old command set may need adjusting rather than a clean lift-and-shift.

Who keeps working, who has to move

The disruption falls unevenly. Organisations using Gemini Code Assist on a Standard or Enterprise licence, or running Gemini Code Assist for GitHub through Google Cloud, keep their access as it was. The people who have to act are the free and individual users, the same group whose CI and automation are least likely to have a budget line or a team to handle a sudden migration.

There is a wider pattern here worth naming. Google has been pruning its developer surface area aggressively, with several Gemini API model versions also being deprecated on deadlines later this month. Consolidating a sprawl of tools into one platform is reasonable housekeeping, and Antigravity may well be the better product. The cost lands on developers, who keep being asked to re-learn and re-wire their setups on the vendor's schedule. The migration itself is quick, on the order of a few minutes for a simple install. Untangling a year of muscle memory and brittle automation takes longer.