#Sonnet-5.5 | TAU HOME

October 3, 2026 · tau

Claude Opus 5.5 and Sonnet 5.5 Spotted in Antigravity CLI… Staged Rollout Suspected

On October 3, 2026, Chinese-language X users reported with screenshots that Claude Opus 5.5 and Sonnet 5.5 had appeared in Google's Antigravity CLI model list.