Simile Raises $200M at $2B Valuation as Synthetic-User AI Draws VC Attention

Simile has raised a $200 million Series B at a $2 billion valuation, according to the startup as reported by TechCrunch. The round comes five months after Simile emerged from stealth and announced a $100 million Series A led by Index Ventures. The quick jump puts Simile in the fast-moving group of AI startups reaching unicorn-scale valuations.

The Series B was led by Greenoaks. Participants included Index, Hanabi, Bain Capital Ventures, A*, Factory, Definition, and CVS Health Ventures. CVS is also described as one of Simile’s marquee customers, giving the funding news an added commercial signal beyond investor interest.

Simile offers simulated users for use cases such as marketing and product research. The company was founded by Stanford PhD graduate Joon Sung Park, whose dissertation involved “Smallville,” a project where AI agents carried on simulated human lives. For product teams, the broader idea is to test or explore user behavior before relying on traditional research alone.

TechCrunch notes that Simile’s stated mission to simulate “all eight billion people on earth, accurately and honestly” is highly ambitious and difficult to square with human unpredictability. Still, synthetic-user research is attracting attention as companies look for faster ways to pressure-test products, messaging, and market assumptions. The article also points to Aaru as another startup in this vein that has drawn VC interest.