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GoogleGoogle Antigravity free planAI coding tools

Free plan with Gemini 3.8 Flash as the agent model, unlimited Tab completions and a weekly-refreshed quota

Google Antigravity is Google's AI coding agent app. Its free plan gives Gemini 3.8 Flash as the core agent model, unlimited Tab completions and Command requests, and a quota refreshed weekly, with no subscription needed.

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Heads up. Per antigravity.google/docs/models, Claude Sonnet 4.6, Claude Opus 4.6 and GPT-OSS-120b leave the free plan on November 2, 2026. Claude Sonnet 5.5 and Opus 5.5 need a paid (non-trial) Google AI Pro, Ultra or Enterprise plan. Free quota refreshes weekly and limits can change.

Posts 1

Nora Hustles@NoraHustles

Free Claude in @antigravity ends tomorrow (2 Nov). After that, the free plan keeps one agent model: Gemini 3.8 Flash.

Google's model docs, checked today:
• Free & Google AI Plus get Claude Sonnet 4.6, Claude Opus 4.6 and GPT-OSS-120b, all marked "Will be removed on November 2, 2026"
• Claude Sonnet 5.5 and Opus 5.5 need paid Google AI Pro, Ultra or Enterprise
• A Pro free trial doesn't unlock them: 5.5 is "non-trial subscriptions only"
• Free quota refreshes weekly, Pro every 5 hours

If your weekly quota still has room, spend today's Claude on the job Flash will struggle with:
1. Pick Claude Opus 4.6 and ask for an architecture review or a refactor plan for your hardest repo
2. Have it write the plan into the repo as PLAN.md, broken into small, checkable steps
3. From tomorrow, point Gemini 3.8 Flash at PLAN.md and run it one step at a time

The model goes away tomorrow. The plan file stays in your repo.

Official sources

Added Nov 1, 2026 · Updated Nov 1, 2026, 09:11 UTC