The author shared part of the prompt.
Claude Opus 5.5 on our AI coding benchmark: build a fully autonomous 3D water simulation from an empty repo - procedural mountains, rain, streams, lakes. TypeScript + Three.js, no physics engine. One prompt, zero corrections, ~21 min. 23/23 tests green. https://github.com/AiondaDotCom/ai-sim-benchmark
Explainers0:22I asked Opus 5.5 to explain gravitational lensing by building an interactive black hole lab
One prompt for the first version, then a dynamic workflow to polish it for three rounds while I slept. This is what I woke up to: 5h 28m end to end, $90 at API prices
https://blackhole.voxyz.ai
Drag the black hole and the sky behind it bends into arcs, closing into a full ring when everything lines up
Each round ran 3 agents. Two reviewers each picked 9 to 10 issues and ranked them P0, P1, P2. The third one fixed them.
Round 1: 3D materials and lighting + UI and type
Round 2: camera motion and inter…
Explainers0:26110k rigid bodies in real time, in a browser tab. Grab anything, fire cannonballs.
Built with Claude Opus 5.5: Augmented Vertex Block Descent (SIGGRAPH 2025, Giles, Diaz & Yuksel) in WebGPU with @threejs . It's a physics solver that stays stable with huge scenes and big mass ratios. Opus 5.5 even put together this whole demo reel video just from a single text prompt in Claude Code haha 🤯
Try it: https://three-avbd.vercel.app
(recorded on an M4 Max, lighter scenes run fine on older computers or on mobile)
Code's here, MIT licensed. Go build something with it, have fun breaking things: https…
