# Antigravity CLI Antigravity CLI is [[Google]]'s agentic coding CLI — the terminal surface of the [[Google Antigravity]] platform. It is the direct successor to [[Gemini CLI]]: announced 19 May 2026, available immediately, and rebuilt from scratch in Go for speed. ## Why it exists Google is consolidating its developer tooling onto a single agent harness. Antigravity CLI shares that harness with the rest of the platform — Antigravity 2.0 (desktop), the SDK, and the IDE — so agent improvements land everywhere at once. Google's stated reasoning: the single-agent workflows of "the early days of 2025" no longer match how people work, because complex problems now want multiple agents splitting the job. ## What's new versus Gemini CLI - **Built in Go** — faster startup and execution than Gemini CLI - **Multi-agent orchestration** as a first-class capability — agents that hand work to each other - **Asynchronous workflows** — background and long-running agent work, not just a blocking REPL - **Shared agent harness** with [[Google Antigravity]] 2.0 and the IDE ## What carries over [[AI Agent Skills]], Hooks, and Subagents all transfer from [[Gemini CLI]] as-is. **Extensions become Antigravity plugins** under the new platform — the concept is preserved, the surface is renamed. Google ships migration docs at https://antigravity.google/docs/gcli-migration but acknowledges initial feature-parity gaps. Announcement was co-signed by Dmitry Lyalin (Group PM) and Taylor Mullen (Principal Engineer, also creator of [[Gemini CLI]]). ## Positioning Antigravity CLI competes with [[Claude Code]] and [[OpenAI Codex]] for the agentic-terminal slot. The differentiator is the unified harness: one engine behind CLI, IDE, SDK, and desktop, rather than four separate tools. ## Migration from Gemini CLI - Consumer users — Google AI Pro / Ultra, and the free [[Gemini Code Assist]] for individuals — get a roughly 30-day migration window; [[Gemini CLI]] **and** Gemini Code Assist IDE extensions stop serving them on **18 June 2026** - **No new GitHub organization installations** of Gemini CLI permitted from 18 June 2026; existing GitHub-triggered requests cease shortly after - Enterprise Gemini Code Assist Standard / Enterprise plans and direct API-key users keep [[Gemini CLI]] indefinitely with continued support and model updates - Migration guide: https://antigravity.google/docs/gcli-migration (video walkthroughs forthcoming) ## References - Transition announcement: https://developers.googleblog.com/en/an-important-update-transitioning-gemini-cli-to-antigravity-cli/ - Antigravity: https://antigravity.google ## Related - [[Google Antigravity]] - [[Antigravity 2.0]] - [[Antigravity IDE]] - [[Antigravity SDK]] - [[Gemini CLI]] - [[Gemini Code Assist]] - [[Google]] - [[Gemini]] - [[AI Agent Harness]] - [[Claude Code]] - [[OpenAI Codex]] - [[AI Agent Skills]] - [[AI Agents]] - [[Model Context Protocol (MCP)]]