LeWorldModel

Posts

LeWorldModel vs V-JEPA: What Actually Changed

April 5, 2026

LeWorldModel removes masking, EMA, and stop-gradient from V-JEPA, trains end-to-end from pixels in hours on one GPU, and plans 48x faster. Here’s the full architecture and what it learns differently.

SIGReg: The Anti-Collapse Trick That Actually Has a Proof

April 5, 2026

V-JEPA prevents collapse with heuristics. SIGReg prevents it with a theorem. Here’s what isotropic Gaussian means, why variance isn’t enough, and how the Cramér-Wold trick makes it cheap.