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Essays tagged “ACX Prediction Contest”. Follow an idea across the archive.
The 2026 ACX/Metaculus prediction contest is now open with a $10,000 prize pool, featuring reader-submitted questions, and Scott announces the winners of the best question submission contest.
The 2025 ACX/Metaculus Forecasting Contest is now open, featuring 36 questions and a particular focus on comparing forecasting bots with human predictors.
Scott Alexander updates readers on Ukraine war predictions, Insight Prediction's challenges, ACX 2022 Prediction Contest results, and various prediction market developments.
Scott offers corrections about Polymarket's status and updates on the 2022 prediction contest, including calls for collaboration and ideas.