AI models can state physics laws but rarely infer them from video

PhySimCode, a new benchmark, tests ten multimodal LLMs on turning physics videos into runnable Python simulations, revealing a large gap between verbal physics knowledge and video-grounded reasoning.

Big Tech
Souraja Kundu · Aditya Gupta · Joel Julin · Yizhou Zhao · Liuyue Xie · Laszlo A. Jeni

Carnegie Mellon University · Amazon AGI

Research Digest··3 min read
6K procedurally generated physics simulation videos paired with code, parameters, and physics chain-of-thought explanations.

6K samples across 162 physics phenomena, rendered as videos from analytic SciPy simulations and PyBullet scenes covering rigid-body, articulated, fluid, and contact-rich dynamics.

Why this paper

From Amazon AGI and Carnegie Mellon University

In one line

State-of-the-art multimodal LLMs recover only 7.7% of ground-truth physics parameters from video, exposing a large video-to-simulation code gap.

What we could check

  • ·No code link found
  • ·No weights link found
  • ·No dataset link found
  • ·No compute details found
  • ✓Limitations stated by the authors (2 noted)
  • ✓Reports numbers on named benchmarks

Observed from the paper text and links we have. Absence here means we did not find it, not that it does not exist.

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Research Digest

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