Simile, an AI startup that simulates human behavior, has raised $200M in a Series B led by Greenoaks at a $2B valuation, just five months after its $100M Series A.

Simile builds a human-behavior foundation model: AI that simulates how people and consumers would react to a product, price or decision, so enterprises can test choices before any real-world rollout. It has already run tens of millions of simulations for Fortune 100 firms.

Returning investors Index Ventures, Bain Capital Ventures and CVS Health Ventures joined the round, alongside new backer Definition. Founder Joon Sung Park, whose Stanford research pioneered generative agents, says revenue has grown fivefold since launch. Note this is a private AI company, not a crypto project, and it has no token.