# Google Antigravity Google Antigravity is [[Google]]'s agentic development platform, given its first major platform release at Google I/O 2026 (19 May 2026). It is built around a single agent harness exposed through four surfaces: - **[[Antigravity 2.0]]** — the agent-first desktop application - **[[Antigravity CLI]]** — the terminal interface, rebuilt in Go (successor to [[Gemini CLI]]) - **[[Antigravity SDK]]** — programmatic access to the harness, for building custom agents - **[[Antigravity IDE]]** — the agentic IDE; the original Antigravity, from December 2025 Because all four share the same harness, improvements to agent behaviour land across every surface at once. ## Why Google built it Google is unifying tooling that grew separately — Gemini CLI, the Antigravity IDE, Code Assist integrations — onto one platform. Its stated reasoning: the single-agent workflows of "the early days of 2025" no longer match how developers work; complex problems now want multiple agents splitting the job over a consistent backend. ## The Gemini CLI consolidation Antigravity CLI replaces [[Gemini CLI]]. Per the 19 May 2026 announcement, consumer users (Google AI Pro / Ultra, free [[Gemini Code Assist]] for individuals) get roughly 30 days to migrate, and Gemini CLI stops serving them on **18 June 2026**. Enterprise Code Assist licences and API-key users keep Gemini CLI indefinitely. [[AI Agent Skills]], Hooks, Subagents, and Extensions carry over — Extensions rebranded as "Antigravity plugins." ## Why it matters - The platform, not the model, is the moat: one harness behind CLI, IDE, SDK, and desktop is harder to match than any single tool - It mirrors how [[Anthropic]] (Claude Code everywhere) and [[OpenAI]] ([[OpenAI Codex]]) are consolidating — the agent harness is becoming the unit of competition ## References - Introducing Google Antigravity: https://antigravity.google/blog/introducing-google-antigravity - Gemini CLI to Antigravity CLI transition: https://developers.googleblog.com/en/an-important-update-transitioning-gemini-cli-to-antigravity-cli/ ## Related - [[Google]] - [[Antigravity 2.0]] - [[Antigravity CLI]] - [[Antigravity SDK]] - [[Antigravity IDE]] - [[Gemini CLI]] - [[Gemini Code Assist]] - [[Gemini Spark]] - [[AI Agent Harness]] - [[AI Agent Skills]] - [[AI Agents]] - [[Claude Code]] - [[OpenAI Codex]] - [[Gemini]]