Google Antigravity at $0: we gave it the same booking app and it ran out of models by half past four

Google closed the free door on the Gemini CLI and pointed individuals at Antigravity. So we walked through that door with the same founder pitch, curveballs and frozen gates the other three agents faced. The free tier serves Gemini 3.8 Flash, Claude Opus 4.6 and GPT-OSS, and in one afternoon we hit the weekly wall on all three. Nine of ten reached gates passed. The money curveball was never reached.