Antigravity Adds Claude 5.5, Drops Claude 4.6
Google's Antigravity now offers Claude Opus 5.5 and Sonnet 5.5 to paid Google AI Pro and Ultra users. Claude 4.6 and GPT-OSS-120b3 are removed on November 2, 2026.
Why it mattersAntigravity users with workflows pinned to retiring models, including GPT-OSS-120b3, must migrate before November 2, 2026, and should rerun coding evals on Sonnet 5.5 first.
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