Yann LeCun left Meta, raised Europe’s biggest seed and made an AI breakthrough (again!)
yannlecun
amilabs.xyz 👏🏼
AI might not need to get bigger to get better.
This new paper from Meta’s former Chief AI Scientist and the Godfather of AI tackles a hidden problem in world models: latent space collapse.
When that happens, different situations look the same to the model, so it stops truly understanding the world.
Most solutions add complexity:
extra networks, multiple losses, pretrained encoders…
This one does the opposite.
It simplifies everything:
just predict the next state + enforce a Gaussian latent space.
The result?
• ~15M parameters
• Trains in hours
• 48x faster planning
• Learns real structure (not just patterns)
It even reacts more to physically impossible events than superficial changes.
That’s a big signal:
the model is learning how the world actually works.
It’s not perfect, still struggles in complex visual scenes.
But it shows something important:
Progress i...