Liquids test
Ice melting in whisky
The prompt: “An ice cube melting in a glass of whisky, condensation forming on the outside of the glass”
Slow state change over time plus transparency. Tests temporal understanding, not just per-frame quality.
Every model, same prompt
#1
Grok Video
xAI
4.33/5 best on this prompt
Good refraction/condensation; the cube shrinks a touch faster than real melting would.
#2
Kling 3.0
Kuaishou
3.83/5
Correct refraction/meniscus but still little real melting; condensation appears abruptly rather than accumulating (milder failure than Sora's fully static render).
#3
OpenAI Sora 2
OpenAI
3.50/5
FAILURE MODE: essentially a static render — no visible melting, no condensation dynamics, no convection over 7s.
Ranked by our blind vision-model judge. Read how we test.
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