$1,874 of Opus 5.5 tokens builds an interactive 3D island

Aman @mdaman010Originally posted 2026.09.28

Open original on X

This is what $1,874 of Opus 5.5 tokens can build 🤯 An entire interactive 3D island, mostly directed with prompts as simple as: “add X and Y” “this looks weird, make it better” Yet it has diving birds, burrowing crabs, fish swimming around a whale, wind-reactive cloth, signs, and dynamic night lighting. 60+ FPS at 1440p. ~2 hours of API usage across multiple subagents. There are still bugs and artifacts, but as a stress test for natural-language-driven 3D world building, this is ridiculous.