Google Antigravity Review: Google’s Free Agent-First IDE
Verdict TL;DR: Google Antigravity’s free tier — weekly agent quota, Gemini 3 Pro access, and unlimited tab completions — is the most ambitious free IDE package from any major vendor. The Manager View, which orchestrates multiple agents in parallel, feels like a genuine glimpse of where coding is headed. The catch is the quota system: heavy users hit the weekly ceiling fast, and there’s no usage dashboard to see it coming.
What Google Antigravity Is
Google Antigravity is an agent-first IDE launched by Google in late 2025 as a heavily modified VS Code fork. It has two faces: an Editor View (a standard IDE with AI tab completions and an AI sidebar) and a Manager View (a mission-control dashboard for spawning and monitoring multiple autonomous agents working across your workspaces in parallel). Agents can write code, run terminal commands, and — via a Chrome extension — drive a real browser to click, type, and verify frontend work.
It’s multi-model out of the box: Gemini 3 Pro and Flash for the core experience, plus Claude Sonnet-class and GPT-OSS models (non-Gemini models route through your own API key). In June 2026, Google consolidated its terminal story here too: the Antigravity CLI replaced Gemini CLI as the main terminal experience for individual developers. Based on published specs and third-party reviews, Antigravity is Google’s answer to Cursor and Windsurf — with Google’s model muscle behind it.
What’s Actually Free
The Antigravity free tier costs $0. Based on 2026 breakdowns of Google’s quota docs, it includes:
- A weekly agent quota measured by “work done” (computational weight, not message count) — meaningful for real tasks, refreshed every 7 days.
- Unlimited tab completions on all tiers, including free.
- Full feature access — Gemini 3 Pro, Agent Manager, browser integration, MCP support.
- Separate rate limits for non-Gemini models — Claude/GPT-OSS quotas are independent, so they may work even when Gemini quota is exhausted (you supply the API key).
Paid tiers: Google AI Pro at $19.99/month (higher quota, 5-hour rolling refresh), AI Ultra at $99.99–$199.99/month (5x–20x quotas). Quota is shared at the account level across the IDE and CLI. The notable pain point: there is no real-time dashboard showing quota consumption, and hitting the weekly baseline locks you out until the next 7-day period.
Key Features
- Manager View — dispatch multiple agents to parallel tasks with a visual dashboard.
- Artifacts — agents produce verifiable deliverables: plans, diffs, screenshots, browser recordings.
- Browser automation — agents navigate and test web apps through a Chrome extension.
- Multi-model — Gemini 3 Pro/Flash built in; Claude and GPT-OSS via your own keys.
- 1M-token context on Gemini 3 Pro for whole-repo reasoning.
- MCP and Skills support — extend agents with external tools.
- Antigravity CLI — terminal agent with subagents, persistent history, and hooks.
- Plan mode — agents draft a plan artifact for approval before executing.
Pros and Cons
Pros
- Free tier includes frontier-model agents (Gemini 3 Pro) — no other $0 plan offers this class of model.
- Manager View’s parallel agents are a genuine differentiator.
- Unlimited tab completions on the free tier.
- Browser automation closes the loop for frontend work.
- 1M-token context handles very large codebases.
Cons
- The weekly quota is opaque — no dashboard, and heavy tasks drain it unpredictably.
- Hitting the weekly cap means a hard lockout until the next 7-day window.
- No JetBrains support — VS Code-fork only.
- Non-Gemini models require your own API keys (extra cost).
- As a newer product, workflows and docs are still maturing.
Who It’s Best For
Antigravity’s free tier is best for developers who want to experiment with multi-agent coding workflows at zero cost — especially frontend and full-stack developers who’ll use the browser-verification loop. It’s also a strong pick for anyone already in the Google ecosystem. It’s a weaker fit for JetBrains loyalists, for developers who need predictable daily throughput (the weekly cap will frustrate you), and for anyone who wants a simple autocomplete tool rather than an agent platform.
FAQ
Is Google Antigravity really free?
Yes — the free tier is $0 with weekly agent quota, Gemini 3 Pro access, and unlimited completions. Google AI Pro ($19.99/month) raises the quota with 5-hour refreshes.
What happened to Gemini Code Assist and Gemini CLI?
Google wound down the standalone Gemini Code Assist offering in June 2026 and migrated the consumer terminal experience from Gemini CLI to the Antigravity CLI. Antigravity is now Google’s main individual-developer coding product.
How does the quota work?
Quota is measured by “work done” — agent-heavy tasks like full-repo refactors drain it far faster than simple fixes. It refreshes weekly on the free tier. There’s no live usage meter, which is the most common complaint.
Can I use Claude models in Antigravity for free?
Claude and other non-Gemini models are supported but require your own API key — usage bills to your Anthropic account, not to Google.
Does Antigravity work with JetBrains IDEs?
No. Antigravity is a standalone VS Code-fork IDE; per 2026 reviews there is no JetBrains plugin.
Bottom Line
Google Antigravity’s free tier is the boldest $0 bet in AI coding: frontier models, parallel agents, and browser-verified frontend work without paying a cent. Based on specs, pricing, and early reviews, the quota opacity is the real tax — if you can live with weekly ceilings and no meter, it’s an extraordinary free toolkit.