Simile

AI · US

Stanford spinout: AI agent simulations that replicate the decisions of real people.

Founders

Joon Sung Park (South Korea · ♂) — An oil-painter-turned-computer-scientist whose award-winning Stanford PhD created generative agents that simulate human behavior, he co-founded Simile as CEO to commercialize human-behavior simulation.
Michael Bernstein (United States · ♂) — A Stanford HCI professor (and ImageNet co-author) advising the generative-agents work, he co-founded Simile to build AI simulating human decisions.
Percy Liang (United States · ♂) — A leading Stanford AI/NLP professor, he co-founded Simile to apply foundation-model research to simulating human behavior.
Lainie Yallen (United States · ♀) — With academic ties to Stanford, she co-founded Simile to help build the company turning generative-agent research into a human-behavior simulation product.

Shares the most investors with (number = shared investors):

Date	Round	Amount
Feb 2026	Funding round Simile, a Stanford spinout, raised $100 million led by Index Ventures for AI that simulates human decision-making behavior.	$100M

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Data is community-curated and may be incomplete.