Google Antigravity Adds Claude 5.5 Models for $19.99-Plus Subscribers
Updated
Updated · startupfortune.com · Oct 3
Google Antigravity Adds Claude 5.5 Models for $19.99-Plus Subscribers
3 articles · Updated · startupfortune.com · Oct 3
Summary
Claude Opus 5.5 and Claude Sonnet 5.5 now appear in Google Antigravity’s model picker, but only for paid AI Pro and Ultra users; trial Pro, free, Plus and Enterprise tiers are excluded.
Google’s documentation confirms the upgrade from older Claude 4.6 models even though the changelog does not, closing a lag after Anthropic released Opus 5.5 on Sept. 22 and Sonnet 5.5 on Sept. 28.
Antigravity still defaults to Gemini 3.1 Pro, but the shared dropdown lets developers compare Gemini and Anthropic models side by side inside one coding workflow.
Google prices that bundle at $19.99 a month for Pro, $99.99 for Ultra 5x and $199.99 for Ultra 20x, offering Claude, Gemini and GPT-OSS under one subscription instead of separate vendor billing.
The move extends Google’s model-agnostic IDE strategy after its $2.4 billion Windsurf deal, while older Claude 4.6 models remain scheduled for removal on Nov. 2.