Google Antigravity: Agent-First IDE with Gemini 3
What is Google Antigravity?
Google Antigravity is an agent-first integrated development environment (IDE) launched in November 2025 alongside Gemini 3. Unlike traditional code editors with AI sidebars, Antigravity is designed from the ground up for autonomous AI agents.
Built as a modified fork of VS Code (via Google's $2.4B Windsurf acquisition), Antigravity provides two primary interfaces:
| View | Purpose |
|---|---|
| Editor View | Familiar coding interface with AI sidebar |
| Manager View | Control center for orchestrating multiple agents in parallel |
What Powers Antigravity
Antigravity supports multiple AI models:
- Gemini 3 Pro — Google's flagship model with generous rate limits
- Gemini 3 Deep Think — For complex reasoning tasks
- Gemini 3 Flash — Fast, lightweight operations
- Claude Sonnet 4.5 — Anthropic's model (full support)
- GPT-OSS-120B — Open-source OpenAI variant
What Makes Antigravity Unique
- Trust Artifacts: Agents produce verifiable deliverables—task lists, plans, screenshots, browser recordings—not just code
- Semantic Skill Discovery: Antigravity auto-loads skills based on your intent, no explicit invocation needed
- Agent-First Architecture: Skills are a core pillar, not an add-on
- Progressive Disclosure: Only loads skill context when relevant, keeping the agent fast
Is Antigravity Free?
Yes, Google Antigravity is free in public preview for individuals. Available for:
- macOS
- Windows
- Linux
Download from antigravity.google
Enterprise pricing has not been announced.
How Antigravity Skills Work
Skills in Antigravity use semantic triggering—the agent compares your natural language request against skill descriptions and automatically loads matching skills. You don't need to memorize skill names or invoke them explicitly.
Example: When you type "Check if the staging server is healthy", Antigravity scans available skills and auto-loads any skill with a matching description like "Validates staging environment health and reports status."
Skills vs MCP in Antigravity
| Component | Purpose | When to Use |
|---|---|---|
| Skills | Methodology and workflows | "How" and "when" to do tasks |
| MCP | Connections to external systems | Databases, APIs, services |
Skills are the brains (strategy). MCP tools are the hands (execution). A Database Migration Skill guides the agent to use a Postgres MCP Tool.
Skill Locations
| Scope | Directory | Availability |
|---|---|---|
| Global | ~/.gemini/antigravity/skills/ | All projects |
| Workspace | .agent/skills/ | Current project only |
Workspace skills override global skills with the same name.
How to Install Skills on Antigravity
Install the /learn Command
The /learn command connects Antigravity to 40,000+ skills:
# Global install (recommended)
git clone https://github.com/agentskill-sh/learn.git ~/.gemini/antigravity/skills/learn
Or workspace-only:
git clone https://github.com/agentskill-sh/learn.git .agent/skills/learn
Then in any Antigravity session:
/learn seo # Search for skills
/learn @anthropic/seo-content-optimizer # Install specific skill
/learn trending # See popular skills
Manual Installation
- Browse skills on agentskill.sh
- Download the skill ZIP
- Extract to
~/.gemini/antigravity/skills/[skill-name]/
Antigravity discovers skills on startup using progressive disclosure.
Popular Antigravity Skills
| Skill | Description | Installs |
|---|---|---|
| frontend-design | Production-grade UI components | 8K+ |
| code-review | Systematic review with security checks | 12K+ |
| seo-optimizer | SEO, keyword research, optimization | 10K+ |
| test-runner | Run tests, analyze failures | 9K+ |
| programmatic-seo | SEO pages at scale | 5K+ |
Antigravity vs Cursor vs Claude Code
| Feature | Antigravity | Cursor | Claude Code |
|---|---|---|---|
| Maker | Anysphere | Anthropic | |
| Base | VS Code fork | VS Code fork | Terminal |
| Model | Gemini 3 | Claude, GPT | Claude Opus |
| Agent-first design | Yes | No | Yes |
| Skills format | SKILL.md | SKILL.md | SKILL.md |
| Pricing | Free (preview) | $20/month | $20/month |
All three support the Agent Skills standard—skills are fully interoperable.
FAQ
Is Google Antigravity free?
Yes, Antigravity is free in public preview for individuals. Download it from antigravity.google for macOS, Windows, or Linux. Enterprise pricing hasn't been announced.
How does semantic triggering work?
Antigravity compares your request against the description field in each skill's metadata. When it finds a match, it auto-loads that skill's instructions. You describe what you want in natural language, and Antigravity selects the right skill automatically.
Can I use Claude Code skills in Antigravity?
Yes. Both use the same SKILL.md format. A community repository has ported 300+ Claude Code skills to Antigravity. Skills are interoperable across platforms.
What's the difference between Skills and MCP?
- Skills = Methodology (the "how" and "when")
- MCP = Tool connections (databases, APIs, services)
Skills tell the agent which strategy to use. MCP provides the tools to execute it. They work together.
Where do skill files go in Antigravity?
- Global:
~/.gemini/antigravity/skills/[skill-name]/SKILL.md - Workspace:
[project]/.agent/skills/[skill-name]/SKILL.md
Workspace skills take priority over global skills with the same name.
Does Antigravity support the SKILL.md format?
Yes. Antigravity fully supports the open Agent Skills standard. Google has published official Codelabs on authoring Antigravity skills using this format.
Sources:
Explore Google Antigravity Skills
Browse 40,000+ skills ready to install with /learn
Browse All Skills