Harvard & MIT built 8.3 billion AI personas to simulate the world's population

hakansan · reddit · 2026-08-28

Harvard and MIT researchers built 8.3 billion AI persona agents to simulate the global population, each assigned specific traits. The agents correctly adhered to their assigned traits in 91.5% of trials.

Potential uses discussed include election campaign design, product/feature validation without focus groups, and A/B testing alternatives. Paper: https://arxiv.org/abs/2608.04205

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