Claude Opus 5.5 and Sonnet 5.5 arrive in Google Antigravity for Cloud customers
Sorted AI21 OctGoogle has made Anthropic's Claude Opus 5.5 and Claude Sonnet 5.5 available in Google Antigravity, its agentic coding tool, for Google Cloud customers, alongside Gemini models such as Gemini 3.8 Flash and Gemini 4 Argon. An administrator must enable them first; they then work across Antigravity 2.0, the Antigravity CLI and the Antigravity IDE extensions for VS Code, JetBrains IntelliJ and Visual Studio. Claude usage does not draw from the pooled Gemini Enterprise monthly token quota and is billed pay as you go through Google Cloud Billing, so overages must be enabled. Google suggests having one model family write code and another review it, and using cheaper Flash subagents for routine lookups.
Model pages:Claude Opus 5.5 (batch) →Claude Opus 5 (batch) →
Why it matters: If your team already codes in Antigravity, you can now have one model write and a different one review inside the same tool; set spend limits first, because Claude usage is billed separately.
Google Cloud ↗AI-assisted, reviewed by Sorted AI
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