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Simile

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Simile is a human simulation company: we develop AI models that estimate what people will do in new situations.

1

Products

6

Employees

$100M

Total Raised

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About Simile

Simile is a human simulation company: we develop AI models that estimate what people will do in new situations. By drawing on rich ground truth information about real people, we build models that extrapolate their behavior and attitudes. To achieve this, we are building a foundation model of human behavior—one that knows much more about human behavior than what's available on the web for traditional large language models. We tie this modeling together with a product that enables people to author simulations to answer any question they need. Our vision is to empower people to ask any question to any person, at any time. Our customers are using Simile to explore potential new concepts, understand their customers more deeply, and gather instant insights for faster, better decisions. Our leadership includes: - Joon Sung Park (CEO): TED AI speaker, Stanford PhD, whose research invented AI simulation of human behavior - Percy Liang (Chief Scientist): coined the term "foundation model", Stanford Professor of Computer Science, co-founder of Together.ai - Michael Bernstein (Chief Product Officer): Stanford Professor of Computer Science, nationally bestselling author, interaction designer - Elaina Yallen (Chief Customer Officer): Previously Head of Product and Engagement at Hebbia, COO at Valence

Products by Simile

Funding History

Total raised: $100M across 1 round

Growth$100MFeb 2026
Index Ventures,Andrej Karpathy,Fei-Fei Li,Adam D'Angelo