Gemini CLI stopped serving most people on 18 June 2026. Google announced the move on 19 May 2026: “we’re unifying our efforts into Google Antigravity, our premier agent-first development platform”. If you paid for an organisation licence, nothing changed. If you were on AI Pro, AI Ultra, or the free Code Assist tier, it stopped.
One command-line tool replaced another, with a month’s notice and most of the same parts.
- Announced 19 May 2026, effective 18 June 2026.
- Who lost access: Google AI Pro and Ultra, and free Gemini Code Assist users.
- Who did not: organisations with paid licences — Google says “your access remains unchanged”.
- What carried over: Agent Skills, Hooks, Subagents, and Extensions, now called plugins.
- Antigravity CLI is available to everyone, per Google’s post.
What happened, and when?
Google’s post gives one date, 18 June 2026, for two groups. For individuals: “On June 18, 2026, Gemini CLI and Gemini Code Assist IDE extensions will stop serving requests for Google AI Pro and Ultra, as well as those using it free of charge using Gemini Code Assist for individuals.” For GitHub: “on June 18, 2026, there will be no new installations on Github organizations and requests in the following weeks will stop being served” — so on GitHub, 18 June stopped new installations and serving ended in the weeks after.Google, Transitioning Gemini CLI to Antigravity CLI, 19 May 2026, read at source 16 Sep 2026.
If a script of yours still calls Gemini CLI and it is failing, this is why — and the sampling parameters changed too. It is not a rate limit or an outage.
What carries over?
The concepts survive the rename. Google lists what came with it: “Agent Skills, Hooks, Subagents, and Extensions (now as Antigravity plugins)”. So the shape of a setup — skills you wrote, hooks you attached, subagents you defined — maps across; the word for extensions changed. The rest of Google’s 2026 renames are on every Google AI tool in 2026.
Google did not promise identical behaviour, and this page did not test it. Treat the migration as a port, not a swap: expect to re-check anything that depended on exact output.
Who is unaffected?
Paid organisations. Google: “your access remains unchanged. We’ll continue to support Gemini CLI and Gemini Code Assist with access to the latest Gemini models”. That is the split worth knowing before you migrate a team: the free and consumer-subscription tiers moved, the enterprise licence did not have to.
The Antigravity agent in the Gemini API
A separate surface from the CLI also changed. Antigravity is offered as a managed agent in the Gemini API, and on 17 September 2026 Google released antigravity-preview-09-2026, “which replaces and deprecates antigravity-preview-05-2026”. The old version “shuts down on October 5, 2026”.Google, Gemini API release notes, 17 Sep 2026, read in a browser 22 Sep 2026; the deprecations page gives the same shutdown date.
If you run it on a remote sandbox and read only its output, Google says to “update the agent string and nothing else changes”. If you run its tools locally or parse its function calls, the built-in tools changed: “Parameters use PascalCase instead of snake_case, and file edits use line-range replacements instead of full rewrites.” Some tool names changed as well — Google’s table maps write_file to write_to_file, read_file to view_file and list_files to list_dir.Google, Gemini API release notes, 17 Sep 2026, read in a browser 22 Sep 2026.
What this page could not verify
- Feature-by-feature parity. Google names the categories that carried over, not the details inside them.
- Whether the old CLI still installs. Not tested from here.
- Rate limits on the new tool. Reported by users in forums; no vendor figure was found.
Google, An important update: transitioning Gemini CLI to Antigravity CLI, 19 May 2026, read at source 16 September 2026.
Dates on this page come from the announcement, not from testing.