Antigravity adds Claude Opus & Sonnet 5.5 for Pro/Ultra; free loses Claude
Google Antigravity now lists Claude Opus 5.5 and Sonnet 5.5 (thinking) for Google AI Pro (non-trial) and Ultra only—free, Plus, and Enterprise get none. Claude Sonnet/Opus 4.6 and GPT-OSS-120B are marked for removal on Nov 2, 2026.