Google discontinues Claude 4.6 and GPT-OSS-120b in Antigravity on November 2
Google’s Antigravity platform will remove Claude Sonnet 4.6, Claude Opus 4.6, and GPT-OSS-120b on November 2, 2026, according to official documentation. The exact end time and user rollout timeline remain unclear. These models are not being replaced by free-tier alternatives like Gemini 3.8 Flash, which is available in the free plan and Google AI Plus. Instead, Claude Sonnet 5.5 and Opus 5.5…
Key points
- Claude 4.6 (Sonnet/Opus) and GPT-OSS-120b end on November 2, 2026, with no confirmed cutoff time or user rollout date
- Gemini 3.8 Flash replaces free-tier models, but Claude 5.5 requires paid Pro/Enterprise contracts—no trial access
- Google warns against relying on past model performance; users must test new models with real tasks and verify handover memos
Model pages: Gemini 3.8 Flash → · Claude Sonnet 5.5 → · Claude Opus 5.5 →
The story so far
7 episodes →- Google discontinues Claude 4.6 and GPT-OSS-120b in Antigravity on November 2this story
What to review when changing Antigravity models: Scheduled end of Claude 4.6 and GPT-OSS, and continuous AI operations
note.com · 2 November 2026
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