Joon Park is the founder of Simile. Simile has raised $100M in total funding. Latest round: Series A. Backed by Index Ventures. Based in Palo Alto, CA.
Joon Sung Park is the CEO and Co-founder of Simile, an AI company that develops large language model-based simulations for market research, brand testing, and policy analysis. A Stanford PhD graduate (2025), he spun his foundational research into Simile, which emerged from stealth in February 2026 after securing $100M in Series A funding.
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