Antigravity locks Gemini 4 Argon behind Ultra while Pro gets Opus and Sonnet 5.5

Rajesh Thallam @rajesh_thallamOriginally posted 2026.10.14

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Wild that on Antigravity you can use 3rd-party frontier models like Opus/Sonnet 5.5 on the Pro plan, but Gemini 4 Argon is locked behind an Ultra sub. Why does Google make it so hard for devs to try their own models, even with a sub? Other providers let you try their frontier models, just with lower usage limits.