Simile
Category: AI Infrastructure
An AI simulation platform that creates digital populations of 'Generative Agents' to predict human behavior, consumer reactions, and social outcomes. Simile was founded in 2025. The company is led by Joon Sung Park. Based in Palo Alto, USA. Team size: 10-50. Total funding raised: $100.0M. Latest round: Series A ($100.0M, Feb 2026). Key investors include ["Index Ventures","Bain Capital Ventures","A*","Hanabi Capital","Fei-Fei Li","Andrej Karpathy"].
- Founded
- 2025
- Headquarters
- Palo Alto, USA
- Team size
- 10-50
- Total funding
- $100.0M
Value proposition
Provides a 'glimpse into the future' by allowing organizations to test products, marketing campaigns, and policies on digital twins of human society before real-world deployment, reducing risk and cost.
Products and solutions
["Generative Agent Population Engine","Behavioral Simulation Sandbox","Predictive Consumer Analytics Dashboard","Social Dynamics Modeling Toolkit"]
Unique value
Utilizes 'Generative Agents'—AI entities with long-term memory and social capabilities—to move beyond static data analysis into dynamic, emergent social simulations.
Target customer
Fortune 500 enterprises, market research firms, product development teams, and public policy makers.
Industries served
["Retail and Consumer Packaged Goods (CPG)","Marketing and Advertising","Public Policy and Government","Product Management","Social Sciences Research"]
Technology advantage
Founded by the lead authors of the seminal 'Smallville' research; leverages a proprietary architecture that scales LLM-based agents into complex, interacting digital environments that mirror real-world human psychology.
How they differentiate
Simile utilizes 'Generative Agents' with long-term memory and social capabilities to create emergent social simulations, moving beyond static synthetic personas to dynamic 'what-if' behavioral modeling.
Main competitors
["Synthetic Users","Kantar (AI/Digital Division)","Inworld AI"]
Key partnerships
["Stanford University (Academic/Research roots)","Index Ventures","Bain Capital Ventures","Strategic early-access partners in the consumer goods and tech sectors"]
Notable customers
["Fortune 500 CPG companies","Global Retailers","Public Policy Research Institutes"]
Major milestones
["Publication of the seminal 'Generative Agents' (Smallville) research paper in 2023","Company founded in Palo Alto in 2025","Secured $100M Series A led by Index Ventures in February 2026","Official exit from stealth mode (Feb 2026)"]
Growth metrics
Emerged from stealth in February 2026 with $100M in capital; currently scaling R&D and enterprise pilot programs.
Market positioning
Frontier AI simulation platform for high-end enterprise strategy and market prediction.
Geographic focus
North America, Europe
Patents and IP
Proprietary algorithms based on 'Generative Agents' research; specific public patent filings not disclosed as of latest update.
About Joon Sung Park
Joon Sung Park is a computer scientist and researcher who previously served as a PhD student at Stanford University, where he was the lead author of the seminal 'Generative Agents' (Smallville) research paper. His work focuses on human-computer interaction (HCI) and natural language processing (NLP), specifically creating believable simulations of human behavior using large language models. He is also a TED speaker on the topic of AI simulations.
Official website: https://simile.ai