In the first half of 2026, venture investors committed more than $3 billion to startups building world models, AI systems that learn the physics of an environment instead of the statistics of text. Yann LeCun walked out of Meta and raised a $1.03 billion seed at a $3.5 billion valuation, the largest seed round in European history. The wager underneath every check is that the next foundation model will simulate reality rather than describe it.

As frontier language models commoditize and inference margins compress, investors are repricing where defensibility sits in the AI stack. World Labs, founded by Stanford’s Fei-Fei Li, raised $1 billion in February 2026 at a $5.4 billion post-money valuation, lifting its total to $1.23 billion. Decart closed $300 million in May at a $4 billion valuation. Odyssey, the self-driving spinout, raised a $310 million Series B in June at $1.45 billion. General Intuition, eight months after a $133.7 million seed, is in talks to raise roughly $300 million at just over $2 billion. Vinod Khosla, who led that seed, has said he expects multiple........

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