Simile
Foundation models that simulate human behavior -- 'synthetic users' for product and marketing research.
AI
📍 San Francisco, CA
Founded 2026
Current Valuation
$2.0B
as of 2026-Q3
UNICORN
Simile builds foundation models that simulate human behavior -- 'synthetic users' businesses use for product, marketing, and policy research. Founded in 2026 by Stanford's Joon Sung Park (of the 'Smallville' generative-agents research) with Michael Bernstein, Percy Liang, and Lainie Yallen, it launched in February 2026 with a $100M Series A led by Index Ventures. Five months later it raised a $200M Series B at a $2B valuation led by Greenoaks (with Index, Bain Capital Ventures, Hanabi, A*, Factory, Definition, and CVS Health Ventures). Revenue has grown roughly 5x since launch; customers include CVS Health, Wealthfront, Deloitte, and Gallup.
Company Profile
Growth
Revenue up ~5x since Feb 2026 launch; customers incl. CVS Health, Wealthfront, Deloitte, Gallup
Last Round
Series B — $200M (Jul 2026) · Lead: Greenoaks
Fundraising Status
Series B · $200M · 1 mo ago
privateTotal raised $300M1 disclosed rounds
Series B Impact
Round Size
$200M
Primary financing announced
Post-Money Valuation
$2.0B
Company-announced mark
Round / Post-Money
10.0%
New capital ÷ post-money
Disclosed Funding
$300M
Cumulative disclosed rounds
Step-up compares disclosed post-money valuations. Round / post-money is a financing-size ratio, not an ownership or dilution estimate.
Funding History
| Round | Amount | Date | Lead Investor | Post-Money |
|---|
| Series B | $200M | Jul 2026 | Greenoaks | $2.0B |
Founders & Key People
Joon Sung ParkMichael BernsteinPercy LiangLainie Yallen
Investors
Greenoaks · Index Ventures · Bain Capital Ventures · Hanabi · A* · Factory · Definition · CVS Health Ventures
Products
- Agentic twin simulations of real consumers
- Synthetic-user behavioral simulation platform
Competitors
Synthetic Users · Aaru · Roundtable
AISynthetic UsersBehavioral SimulationFoundation ModelsMarket Research
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-Q3. Refreshed quarterly.