Claude Opus 5.5 and Sonnet 5.5 are now available in Google Antigravity
AIGoogle Cloud says Claude Opus 5.5 and Claude Sonnet 5.5 are now available in Google Antigravity for Google Cloud customers, once an administrator enables them. Opus 5.5 is built for complex work, and Sonnet 5.5 is a faster, lower-cost option selectable from the model picker alongside Gemini 3.8 Flash and Gemini 4 Argon.
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Google Cloud · AI & Machine Learning · cloud.google.comPublished · added here
Original title: Claude Opus 5.5 and Claude Sonnet 5.5 are now available in Google Antigravity