23:37
32d ago
→Simulation as the New Scaling Law — Joon Sung Park, Simile AI
Joon Sung Park, co-founder and CEO of Simile AI, walked through the company's roadmap on Latent Space. Simile just raised a $200M Series B at a $2B valuation led by GreenOaks and Index Ventures, with backers including Fei-Fei Li and Andrej Karpathy. Their core product trains behavioral foundation models on long-form interviews, transaction data, and randomized controlled trials to build digital twins of real people. In a 1,000-person study, the models reproduced human behavior and attitudes with 85% accuracy—comparable to how consistently the same person retakes a test. Joon argues frontier models are too rational to simulate real humans, who make mistakes and hold biases. Simile is already running tens of millions of simulations for Fortune 100 clients like CVS, replacing expensive human focus groups. The long-term ambition is to simulate all 8 billion people to test products, policies, and even study climate change or UBI. The post does not disclose the specific evaluation benchmark behind the 85% figure.
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