This is a documented expansion of the model options described by the page, though the source does not establish when the listings became effective.
Observed facts: The table marks both Claude 5.5 models unavailable for Free and Google AI Plus, available for Google AI Pro and Ultra, and unavailable for Enterprise. The footnote says Pro availability is limited to non-trial subscriptions. The page says users can choose the reasoning model from a selector below the conversation prompt box.
Mechanism: Antigravity exposes selectable reasoning models through its conversation model selector, while plan entitlements determine which options are available. The documented distinction between paid tiers and trial subscriptions means a plan label alone may not guarantee access to these Claude models. Why now: The official models page now provides a concrete plan-by-plan listing, making the access conditions more specific than an unverified claim about the product.
Implications: For eligible Pro and Ultra users, the documentation indicates a choice between Claude 5.5 reasoning models and other listed models. Enterprise customers should not assume these entries apply to their plan: the table marks Enterprise unavailable. The entry records product documentation, not an independent test of the selector or model behavior.
Evidence boundary: The source is the official Antigravity models page; it supplies no date for when the entries were added and does not verify rollout to individual accounts. Watch condition: Check whether the model selector exposes Claude 5.5 to eligible non-trial Pro and Ultra accounts, and whether Google later changes the plan matrix or clarifies rollout timing.