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The Second Pre-training Paradigm

The Second Pre-training Paradigm

Jim Fan
@DrJimFan·372.7K followers
·4 min read

Next word prediction was the first pre-training paradigm. Now we are living through the second paradigm shift: world modeling, or “next physical state prediction”. Very few understand how far-reaching

Next word prediction was the first pre-training paradigm. Now we are living through the second paradigm shift: world modeling, or “next physical state prediction”. Very few understand how far-reaching this shift is, because unfortunately, the most hyped use case of world models right now is AI video slop (and coming up, game slop). I bet with full confidence that 2026 will mark the first year that Large World Models lay real foundations for robotics, and for multimodal AI more broadly. In this c

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