Physical consistency is the most important feature of a world model, and the hardest to get right.
That's why you see videos with objects defying gravity and people posing in impossible ways.
Here is a complete evaluation of existing world models.
Seedance 2.5 is the best right now.
We gave 8 SoTA video world models a physics exam.
Top score: 57.76 / 100.
One revealing result: free-fall video passed the consistency screen. Their average composite score was just 26.61/100.
Physics is still undefeated.
Today we introduce World Models' Last Exam in Physics — 40 controlled tasks, 9 physical categories, measured against real physical laws.
Full breakdown ⬇️
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