Anthropic’s J-lens turns a raw-pixel video model into a playable world model
mathemagic1an · x · 2026-07-29
The post asks whether video models truly learn physics or are just stochastic pixel parrots.
- Training a transformer on raw pixels can yield a causal world model.
- The model can even be “played” like a video game.
- The thread says this comes from applying Anthropic’s J-lens to video models, with code and a playable demo linked below.
Related event: 4M-Parameter Pixel Transformer Emerges as Physical World Model(10 posts)→
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