HTML Opus #23
4.2
Evaluation
4.2 avg
6.5 physics accuracy
6.5 design quality
5 animation quality
3 slider ux
1.5 completeness
2.5 overall
Two crowns Same mass, different density Vertical slider Slider works Slider controls crowns Slider direction correct Full slider range Fall animation Water displacement Rising water level Splash effects Physics correct Live mass value Live volume value Live density value Live displaced water Gilded displaces more Heureka animation No external deps Light bg / dark text Self-contained HTML

This is a general Archimedes buoyancy simulator with density/fluid sliders, not the required two-crown (pure gold vs. gilded) Archimedes demo — the core prompt requirements (two crowns, same mass, vertical immersion slider, fall animation, rising water, splash effects) are entirely absent.

10,089 output tokens · claude-opus-4-6 · end_turn

This is a general Archimedes buoyancy simulator with density/fluid sliders, not the required two-crown (pure gold vs. gilded) Archimedes demo — the core prompt requirements (two crowns, same mass, vertical immersion slider, fall animation, rising water, splash effects) are entirely absent.