Four-Year Study: Experts Including Superforecasters Repeatedly Underestimated AI Progress

Afinetheorem · x · 2026-09-24

ResearchFRI shares interim findings from the most comprehensive series of studies on expert AI forecasts run over four years. Experts—top economists, computer scientists, biologists—dramatically underestimated AI capability progress every year, and superforecasters underestimated it even more. Track records on diffusion measures were mixed: AI revenue forecasts were major underestimates while electricity-share forecasts are on track. Notable overestimates include mid-2025 models' ability to help amateurs with biorisk lab tasks and the rollout speed of self-driving cars. It's too soon to judge long-run forecaster performance.

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