GPT-6 Astra vs Opus 5.5 vs Sonnet 5.5: 3D kangaroo race from one prompt

Gull @0xGullOriginally posted 2026.10.26

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I gave GPT-6 Astra, Opus 5.5 and Sonnet 5.5 the exact same prompt: build a 3D kangaroo and race it 100 meters. GPT built the Usain Bolt of kangaroos. 🥇 GPT-6 Astra: 7.73 s 🥈 Opus 5.5: 8.73 s 🥉 Sonnet 5.5: 9.93 s Usain Bolt's world record is 9.58 s. So two of these kangaroos would beat him. Sonnet's would lose to a human. Same prompt. One shot. Each model invented its own kangaroo, track and physics. Which one would you bet on? 👇