Google is preparing one of its biggest developer tool transitions yet as the company officially moves from Gemini CLI to Antigravity CLI. Starting June 18, 2026, the legacy Gemini CLI and Gemini Code Assist IDE extensions will officially stop serving requests for consumer, Free, Pro, and Ultra users. This marks the end of an era for developers who built workflows around the Gemini ecosystem.
Antigravity CLI has been rebuilt from the ground up with a much stronger focus on speed, automation, and multi-agent AI workflows. Google is considering positioning Antigravity as the foundation for its entire AI-powered developer experience.
A Faster, Smarter, More Powerful AI Coding Experience
One of the biggest upgrades coming with Antigravity CLI is performance. Unlike the older Gemini CLI, the new system is written entirely in Go, which makes it lighter, faster, and more responsive during real-world development tasks. Developers working on large repositories or AI-assisted refactoring should notice immediate improvements in execution speed and terminal responsiveness.
Google is also representing asynchronous agentic workflows, which may become an interesting feature of Antigravity CLI. Instead of waiting for one AI task to be over before starting another, now developers can run multiple agents simultaneously in the background. It means large-scale refactors, research tasks, debugging sessions, and automation flows can happen in parallel without freezing or blocking the terminal session.
The transition also unifies Google’s AI tooling ecosystem. Antigravity CLI shares the same agent harness that powers the upcoming Antigravity 2.0 desktop application, creating a smooth connection between terminal workflows, the desktop experience, and IDE integrations. Future improvements to core AI agents will automatically benefit every Antigravity-powered interface.
Google is also maintaining continuity for current power users. Gemini CLI “Extensions” are now renamed as Antigravity “Plugins”, but the underlying structure remains familiar. Existing Agent Skills, Hooks, and Subagents continue to work, which helps long-time Gemini users migrate without rebuilding their entire setup from scratch.
Migration Will Be Simple for Existing Gemini CLI Users
Google tells us that the migration process has been designed to feel nearly effortless. During the first launch of Antigravity CLI, users will automatically receive notifications to import their existing Gemini ALI settings, workflows, and extensions.
For users who want to manually trigger the migration process, Google is providing a simple terminal command:
“agy plugin import gemini”
Workspace environments and contextual systems are being directly integrated into the new platform. Antigravity CLI continues supporting familiar context configuration files such as GEMINI.md and AGENTS.md, allowing developers to preserve existing workflows without major changes.
Global context management also remains intact through:
~/.gemini/GEMINI.md
This indicates that teams that already depend on ongoing workspace guidelines, coding protocols, or AI-agent conduct regulations can maintain their operations with little disruption following the transition.