Simile Raises $200M Series B at $2B Valuation Five Months After Series A

Simile, which builds synthetic AI users for marketing and product research, closed a $200 million Series B at a $2 billion valuation. Greenoaks led; Index, Bain Capital Ventures, and CVS Health Ventures participated. The round comes five months after a $100 million Series A led by Index. CVS is a marquee customer. Founder Joon Sung Park developed the core technology from his Stanford PhD work on Smallville, where AI agents simulated human lives.