New prompt: Fluid simulation
A real-time WebGL fluid sim in one file — the hardest prompt in the set so far.
Fluid simulation asks a model for a real-time, mouse-driven WebGL fluid solver in a single HTML file: advection, pressure, the works. It is the most demanding prompt we run, and the spread is wide.
A handful of models produced a genuinely convincing dye-and-velocity field; others returned a black canvas because a shader failed to compile. The strip below runs from clean to dead so you can see exactly where each one lands.
Top builds in this update
CLEAN “Fluid dye simulation with swirling colored trails responds nicely to drag, wheel, and keyboard input, though click alone did little.”— vision grade, anthropic/claude-sonnet-5
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CLEAN “Fluid dye simulation with colorful swirling smoke that reacts to click and drag with new dye and motion.”— vision grade, anthropic/claude-sonnet-5
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CLEAN “Fluid dye simulation with swirling colors that responds vividly to click, drag, and wheel with dye trails and color shifts.”— vision grade, anthropic/claude-sonnet-5
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PARTIAL “Drag creates a thin pink dye trail, but click/wheel/keys do nothing and fluid lacks swirling detail or richness.”— vision grade, anthropic/claude-sonnet-5
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