Google Antigravity 2.0 launched at I/O 2026 on May 19 with an updated desktop app, an SDK for custom workflows, and a new CLI tool that replaces Gemini CLI immediately. The migration is not optional: Gemini CLI stops serving requests for Google AI Pro and Ultra subscribers, plus free-tier Gemini Code Assist users, on June 18, 2026.

How to Migrate

Install the Antigravity CLI binary from the Google developer site and authenticate with your existing Google AI Pro or Ultra account. The CLI is written in Go (faster execution than the old Node-based Gemini CLI), runs agents asynchronously in the background, and exposes the same agentic capabilities the Antigravity desktop app already ships. Per 9to5Google's coverage, the CLI is powered by the new Gemini 3.5 Flash model that Google co-developed using Antigravity itself. First-cycle workflow today: install the binary, run your last Gemini CLI prompt through it, and confirm the output matches before scripting the swap into your CI pipeline.

Why It Matters

Gemini CLI shipped less than a year ago and rapidly became the default terminal interface to Google's Gemini models for creators automating workflows from the command line. Forced deprecation on a 30-day window is aggressive. The upside per TechCrunch's coverage is that Antigravity 2.0 reframes the surface as an "agentic development platform" rather than a chat client, with multi-agent orchestration, scheduled background tasks, and the ability to design custom subagent workflows that the Gemini CLI never supported. The pattern echoes the way xAI Grok Build shipped as a CLI-first agent.

Key Details

  • Antigravity CLI replaces Gemini CLI immediately; old CLI stops working June 18
  • Built in Go for faster startup and asynchronous background execution
  • SDK for custom subagent workflows
  • Desktop app gains multi-agent orchestration and scheduled task runs
  • Default model is the new Gemini 3.5 Flash announced the same day
  • Available to Google AI Pro, Ultra, and free-tier Gemini Code Assist users

What to Do Next

If you have a CI pipeline, automation script, or production workflow that calls Gemini CLI, install Antigravity CLI this week and run your top three prompts through both to validate parity. Update your scripts to point at the new binary. Mark June 18 on the calendar as the hard cutoff. Creators who only used Gemini CLI casually can migrate after the first few weeks of community bug reports settle.