Google Antigravity vs Claude Code (2026): Free Multi-Model IDE vs Terminal Agent
Google Antigravity vs Claude Code: Antigravity is Google's agentic development platform - an IDE plus a CLI (agy) and SDK, backed by Gemini 3 and able to run Claude and open models too, with a free tier for individuals. Claude Code is Anthropic's terminal-first agent with a deeper, longer-proven CLI/CI ecosystem, but it needs at least a $20/mo plan. The catch with Antigravity: despite "open ecosystem" marketing, it's closed-source - and it arrived by replacing the open-source Gemini CLI. Pick Antigravity for a free, multi-model Google-stack IDE; pick Claude Code for a proven, portable terminal agent.
Facts and prices below were checked in 08/2026 and change fast - verify on the official sites before deciding.
Google's Antigravity is the most-hyped new challenger to Claude Code, partly because of how it launched. This head-to-head covers what Antigravity is, the Gemini CLI story that shadows it, and where each tool wins. For the full field, see Claude Code vs the new AI coding agents; for the OpenAI angle, see Claude Code vs Codex.
Antigravity vs Claude Code: quick comparison
| Criterion | Google Antigravity | Claude Code |
|---|---|---|
| Maker | Anthropic | |
| Form | Agentic IDE + CLI (agy) + SDK | Terminal CLI + IDE/desktop/web |
| Open source | No (closed) | No (closed) |
| Models | Gemini 3 + Claude + GPT-OSS | Claude models |
| Free tier | Yes (individuals) | No (needs Pro $20/mo) |
| Track record | Newer (preview 2025-11) | Longer, deeper CLI/CI ecosystem |
| Best for | Google-stack, free multi-model IDE | Proven, portable terminal agent |
What is Google Antigravity?
Antigravity is Google's agentic development platform: an IDE with a companion CLI (agy) and SDK, built around Gemini 3 models and with stated support for Claude and open GPT-OSS models inside the same IDE. It launched in public preview in November 2025 and expanded at Google I/O 2026. It leans on native browser-in-the-loop automation and multi-model choice as its headline features - but the platform itself is proprietary and tied to Google's infrastructure.
The Gemini CLI story you should know
Antigravity's rise came with a controversial move. On 2026-06-18, Google shut down the open-source Gemini CLI (Apache 2.0) and migrated users to the closed-source Antigravity CLI, cutting the free tier from roughly 1,000 requests a day to around 20 (enterprises with Gemini Code Assist licenses kept access). That open-to-closed, free-to-paid switch is a real data point when you weigh Antigravity's "open ecosystem" positioning against Claude Code, which never marketed itself as open in the first place.
Where Antigravity beats Claude Code
- A genuine free tier for individuals - Claude Code requires at least a $20/mo Pro plan.
- Multi-model in one IDE - Gemini, Claude, and GPT-OSS side by side.
- Native browser automation baked into the agent loop.
Where Claude Code stays ahead
- A proven, portable terminal agent - Claude Code runs in any terminal and any IDE, with a longer track record than a product that launched in late 2025.
- Deeper ecosystem - MCP, subagents, hooks, skills, and mature CI/CD integrations.
- No bait-and-switch history - the Gemini CLI shutdown is a trust and adoption risk that Claude Code doesn't carry.
Which should you pick?
Choose Antigravity if you're already on the Google stack and want a free or cheap multi-model IDE, and you're comfortable with a closed platform. Choose Claude Code if you want a proven, portable, terminal-first agent with a deeper ecosystem and no history of pulling an open tool closed. If price is the only blocker to Claude Code, compare tiers in Claude Code pricing first.
If you stay on Claude Code
If you land on Claude Code, prebuilt bundles of skills, subagents, and workflows save you from configuring everything by hand - that's the case for AgentKit for Claude Code (20% off via link). It's optional and it's an add-on for Claude Code, not Antigravity; weigh it in the AgentKit review.
Frequently asked questions (FAQ)
Is Google Antigravity free?
It has a free tier for individuals; the CLI and higher usage require a Google AI subscription. Claude Code, by contrast, needs at least a $20/mo Pro plan.
Is Antigravity open source?
No. Despite "open ecosystem" marketing, Antigravity is closed-source and tied to Google's infrastructure. It replaced the genuinely open-source Gemini CLI, which Google shut down on 2026-06-18.
Can Antigravity use Claude models?
Yes - Antigravity supports Claude and open GPT-OSS models alongside Gemini inside its IDE, though the platform itself remains Google-controlled.
Conclusion
Antigravity is a capable, free-to-start, multi-model IDE - but it's a young, closed platform that arrived by closing an open one. Claude Code counters with a proven, portable terminal agent and a deeper ecosystem. If free and Google-native matter most, try Antigravity; if a stable, portable workflow matters more, stay with Claude Code. See the wider comparison in Claude Code vs the new AI coding agents.
Staying with Claude Code? AgentKit packages skills, subagents, and workflows so you skip the setup grind - an optional add-on for Claude Code; you decide whether it fits.
Sources: antigravity.google and developers.googleblog.com; the Gemini CLI shutdown per the project's GitHub discussion; code.claude.com/docs; accessed 08/2026. Prices and tiers change frequently - verify before purchasing.