Google Antigravity Guide

Google Antigravity is Google’s agent-first development platform. Instead of writing every line yourself, you direct AI agents that plan, code, test, and show their work. Antigravity 2.0 launched at Google I/O in May 2026 as a standalone desktop app with a CLI and SDK.

You become the manager of a small team of coding agents.

Desktop app

A command centre for launching and reviewing agent teams, with visual diffs and plans

agy CLI

A keyboard-first terminal client for local, remote, and SSH sessions; it replaced Gemini CLI

IDE extensions

VS Code, Visual Studio, JetBrains, Zed, Xcode, Eclipse, and more

Python SDK

Build custom agents, hooks, and harnesses for apps and CI/CD

Subagents run background tasks at the same time in separate Git worktrees, so one agent can fix a bug while another writes tests. You can also drive sessions remotely from a browser.

• Implementation plans
• Walkthroughs of what changed
• Screenshots and browser recordings
• Unified diffs

Review artifacts before accepting changes.

Agents can open a sandboxed Chromium browser to test web apps, with allowlists and denylists to control which sites they can visit.

• Use /plan to make the agent plan before coding
• Use /boost for deeper reasoning on hard problems
• Adjust reasoning levels per turn

• Rules for coding standards
• Workflows for repeatable tasks
• Skills in SKILL.md files
• Plugins from the marketplace
• MCP servers for outside tools
• Hooks and scheduled tasks

• Gemini models, including Gemini 4 Argon and Flash models
• Claude models, including Sonnet 5.5 and Opus 5.5
• GPT-OSS 120B

Some models need a paid Google AI plan.

Free

Start at $0 with lower limits

Google AI Plus, Pro, and Ultra

Higher limits and optional AI credit top-ups

Enterprise

Pay-as-you-go through Google Cloud or Gemini Enterprise licences

• Approve tool use step by step
• Limit agents to your workspace folders
• Run terminal commands in a sandbox
• Enterprise options include SSO, data residency, and logging

Plan, then build a simple habit tracker web app with a list of habits, daily check-offs, and a weekly streak view. Use local storage, write tests, open it in the browser to check it works, and show me screenshots.

• Start in plan mode and edit the plan
• Let one agent build and another write tests
• Review artifacts before merging

• Commit often so you can roll back
• Keep tasks small and specific
• Never paste secrets into prompts
• Read plugin code before enabling it