Google's Antigravity documentation now marks three partner models for removal. On the Models page, Claude Sonnet 4.6 (thinking), Claude Opus 4.6 (thinking) and GPT-OSS-120b each carry a note that reads "Will be removed on November 2, 2026." The page does not say when the note was added, so this article describes the page as of the October 21 check, Beijing time.
The three models are not offered on every plan as of the check. According to the availability table, Claude Sonnet 4.6 and Claude Opus 4.6 are listed for the Free and Google AI Plus tier and for Google AI Pro, but not for Google AI Ultra or Enterprise. GPT-OSS-120b is listed for Free and Google AI Plus, Google AI Pro and Google AI Ultra, but not for Enterprise.
The same table shows older Gemini models limited to Enterprise. Gemini 3.1 Pro, Gemini 3.7 Flash and Gemini 3.6 Flash are checked only in the Enterprise column. Gemini 3.8 Flash is available on all four plan columns. The table also lists Gemini 4 Argon, Claude Sonnet 5.5 and Claude Opus 5.5 for Google AI Pro, Google AI Ultra and Enterprise, with Pro access limited to non-trial subscriptions.
The Models page does not name a replacement for the removed models or give a reason for the change. The Antigravity Plans page and the Antigravity changelog, checked at the same time, do not mention the removal.
