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: 51-100. Total funding raised: $300.0M. Latest round: Series B. Key investors include Greenoaks, Index Ventures, Bain Capital Ventures, A*, Hanabi Capital, Factory, Definition, CVS Health Ventures, Fei-Fei Li, Andrej Karpathy.
AMW Analysis
Simile is an AI simulation platform that creates digital populations of generative agents to predict human behavior and social outcomes. The company enables organizations to test products and strategies on digital twins before real-world deployment. In February 2026, Simile raised a $100M Series A led by Index Ventures, with participation from Bain Capital Ventures and others, including backing from AI researchers Fei-Fei Li and Andrej Karpathy. Recent news highlights enterprise traction: CVS Health reported 95% accuracy using the platform, built on responses from 400K real people, and is using it to replace focus groups. Simile also demonstrated 80% accuracy in predicting earnings call questions via simulated synthetic populations. As a Stanford spinout, the company is targeting the market research industry with its agent-based simulation approach, offering a scalable alternative to traditional panels.
AMW analysis, generated from 3 tracked news signals.
- Founded
- 2025
- Headquarters
- Palo Alto, USA
- Team size
- 51-100
- Total funding
- $300.0M
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
Aaru, Synthetic Users, Inworld AI
Key partnerships
Stanford University (Academic/Research roots), Gallup (nationally representative panel / research partnership), CVS Health (enterprise deployment / CVS Health Ventures)
Notable customers
CVS Health, Gallup, Wealthfront, Deloitte, Suntory Beverage & Food, Banco Itaú, Garnett Station Partners
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), Raised $200M Series B at $2B valuation led by Greenoaks (Jul 2026), Scaled to 50+ employees and 5x revenue within five months of launch
Growth metrics
Raised $200M Series B at $2B valuation (Jul 2026); revenue grew 5x since Feb 2026 launch; tens of millions of simulations for Fortune 100; 50+ employees; ~$300M total capital.
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.
Latest news about Simile
- Simile raises $200M at $2B valuation five months after prior round
- Simile just secured $100M in Series A funding to transform the $150B market research industry with AI-powered "agentic twins" that simulate human behavior. CVS Health reports 95% accuracy using 2.9M r
- Simile, a Stanford-born startup, raised 100 million USD to scale AI models that predict human behavior via agent-based simulations. Led by Joon Park and Percy Liang, the platform achieves 80 percent a
- Stanford spinout Simily secured 100 million dollars in funding led by Index Ventures to develop AI digital twins that simulate human behavior. The company foundation model predicts consumer choices an
- Simile secured 100 million dollars in Series A funding led by Index Ventures to develop AI agents that simulate human behavior. Training on interviews and behavioral science, the platform enables firm
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Official website: https://www.simile.com
