Founder · Simile

Percy Liang

Co-founder of Simile, an ai company based in Palo Alto.

Co-founderPalo AltoAI
Founded
2025
Palo Alto, United States
Raised to date
$300M
2 rounds on record
Latest round
Series B
$200M · Jul 2026

About

Percy Liang is Co-founder of Simile, an ai company based in Palo Alto, founded in 2025. Simile's most recent disclosed round was a funding round of $200M in Jul 2026.

Compiled from StartupFox records · updates as coverage is published

Company

Est. 2025
Simile
AI · Palo Alto · Active

Simile builds simulated populations for enterprise research. Its models, trained on interviews with real people and behavioural data, stand in for survey respondents and focus groups, answering questions about how customers might react to a product, campaign or policy. The company is based in Palo Alto and emerged from stealth in February 2026.

Funding
Jul 2026Series B$200MGreenoaks, Index Ventures, Hanabi, Bain Capital Ventures, A*, Factory, Definition, CVS Health Ventures
Feb 2026Series A$100MIndex Ventures, Bain Capital Ventures, Hanabi Capital, A*, Fei-Fei Li, Andrej Karpathy
Company profile →2 rounds on record

Journey with Simile

3 milestones
  1. 2023Milestone

    Joon Sung Park and colleagues publish the generative agents research behind Smallville, placing 25 autonomous agents in a simulated town to study human-like behaviour. The paper becomes the technical basis for Simile.

  2. Feb 2026Milestone

    Simile emerges from stealth with a $100 million Series A led by Index Ventures, after roughly seven months of development.

  3. Jul 2026Milestone

    Simile reports more than 50 employees, tens of millions of simulations run for Fortune 100 enterprises, and customers including CVS Health, Wealthfront, Deloitte and Gallup.

Also building Simile

JSJoon Sung ParkCo-founder · CEO→MBMichael BernsteinCo-founder→LYLainie YallenCo-founder→

Coverage

1 story
Funding · 31 Jul 2026 · 5 min read
Simile Raises $200 Million at $2 Billion Valuation Five Months After Its $100 Million Series A