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Metaculus (34)
study critique (270)
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study critique (270)
book review (221)
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34 posts
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Does Forecasting Have Room At The Top?

Scott analyzes whether AI forecasters will plateau near human levels or keep improving, arguing that even non-miraculous progress could yield 4-12 percentage point improvements in prediction market accuracy.

acx
Aug 3, 2026 3,865 words 183 likes 171 comments Listen · 24 min Read Read

Links For July 2026 (Part 2)

Scott's monthly links roundup covering AI progress, the coming flood of philanthropic funding to effective altruism from AI companies, new research on persuasion and forecasting, and various scientific and cultural topics ranging from dementia prevention to Romanian politicians' embarrassing quotes.

acx
Jul 30, 2026 5,973 words 165 likes 333 comments Listen · 40 min Read Read

The AI Superforecasters Are Here

Scott examines the rise of AI superforecasters that now match or exceed top human forecasters, explores how they work and their current performance, and analyzes implications for decision-making, prediction markets, and the future role of AI opinions.

acx
Jul 2, 2026 5,984 words 583 likes 331 comments Listen · 42 min Read Read

The Metaculus Threat To Democracy Index

Scott examines the Metaculus Threat To Democracy Index, which uses crowdsourced forecasting to measure democratic health, discussing its advantages over traditional expert-based indices and its vulnerabilities to manipulation and selection bias.

acx
Jun 25, 2026 1,649 words 202 likes 424 comments Listen · 11 min Read Read

ACX/Metaculus Prediction Contest 2026

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.

acx
Dec 27, 2025 219 words 60 likes 24 comments Listen · 2 min Read Read

Suggest Questions For Metaculus/ACX Forecasting Contest

Scott asks readers to suggest questions for the 2026 ACX/Metaculus forecasting contest, with prizes for the top ten contributors and AI bots competing this year.

acx
Nov 14, 2025 259 words 49 likes 132 comments Listen · 2 min Read Read

Try The 2025 ACX/Metaculus Forecasting Contest

The 2025 ACX/Metaculus Forecasting Contest is now open, featuring 36 questions and a particular focus on comparing forecasting bots with human predictors.

acx
Jan 20, 2025 351 words 58 likes 41 comments Listen · 4 min Read Read

H5N1: Much More Than You Wanted To Know

Scott examines the likelihood and potential severity of an H5N1 bird flu pandemic, analyzing prediction markets and historical data to estimate a 5% chance of pandemic in the next year with most likely moderate severity.

acx
Jan 1, 2025 5,141 words 423 likes 222 comments Listen · 30 min Read Read

Congrats To Polymarket, But I Still Think They Were Mispriced

Scott Alexander praises Polymarket's election success but argues their Trump odds were mispriced, explaining why Trump's win doesn't significantly validate their numbers over other forecasters.

acx
Nov 7, 2024 2,993 words 248 likes 647 comments Listen · 18 min Read Read

Who Predicted 2023?

Scott Alexander analyzes the results of his 2023 forecasting contest, comparing various prediction methods and individual forecasters.

acx
Mar 5, 2024 2,907 words 139 likes 171 comments Listen · 17 min Read Read

Mantic Monday 1/29/24

The post examines the performance of prediction markets in elections, current political forecasts, and various other prediction markets, while also discussing the challenges and potential of forecasting.

acx
Jan 30, 2024 2,887 words 77 likes 227 comments Listen · 19 min Read Read

Mantic Monday 12/4/23

The post discusses recent developments in prediction markets, including challenges in market design, updates to forecasting platforms, and current market predictions on various topics.

acx
Dec 5, 2023 4,770 words 68 likes 284 comments Listen · 29 min Read Read

The Extinction Tournament

Scott Alexander analyzes the surprisingly low existential risk estimates from a recent forecasting tournament, particularly for AI risk, and explains why he only partially updates his own higher estimates.

acx
Jul 20, 2023 4,212 words 141 likes 475 comments Listen · 28 min Read Read

Mantic Monday 4/24/23

The post explores AI forecasting capabilities, compares prediction market performances, and provides updates on various ongoing predictions in technology and politics.

acx
Apr 25, 2023 1,989 words 60 likes 136 comments Listen · 13 min Read Read

Mantic Monday 1/30/2023

Scott Alexander discusses recent developments in prediction markets and forecasting, including Metaculus' milestone, PredictIt's legal issues, and various prediction market topics.

acx
Jan 31, 2023 4,760 words 58 likes 126 comments Listen · 29 min Read Read

2023 Prediction Contest

Scott Alexander announces a formalized 2023 Prediction Contest with 50 questions, multiple modes of play, and cash prizes.

acx
Dec 16, 2022 535 words 89 likes 168 comments Listen · 4 min Read Read

Mantic Monday 8/15/22

Scott Alexander examines the shutdown of PredictIt and its implications for the prediction market industry, while also highlighting new developments and forecasts in the field.

acx
Aug 16, 2022 3,692 words 62 likes 162 comments Listen · 31 min Read Read

Mantic Monday 6/13/22

Scott Alexander reviews recent predictions and forecasts on topics including monkeypox, the Ukraine war, AI development, and US politics.

acx
Jun 13, 2022 1,909 words 50 likes 147 comments Listen · 17 min Read Read

Mantic Monday 3/21/22

Scott Alexander updates readers on Ukraine war predictions, Insight Prediction's challenges, ACX 2022 Prediction Contest results, and various prediction market developments.

acx
Mar 21, 2022 2,282 words 29 likes 92 comments Listen · 22 min Read Read

Mantic Monday 3/14/22

Scott analyzes Ukraine prediction markets, nuclear war risk forecasts, and compares forecasters to experts, along with various updates on prediction platforms.

acx
Mar 14, 2022 2,456 words 54 likes 198 comments Listen · 23 min Read Read

Play Money And Reputation Systems

Scott analyzes play money and reputation systems in prediction markets, discussing their designs, challenges, and potential improvements.

acx
Feb 21, 2022 2,522 words 55 likes 143 comments Listen · 19 min Read Read

Mantic Monday: Ukraine Cube Manifold

Scott Alexander analyzes prediction markets for the Ukraine crisis, introduces Manifold Markets, and discusses recent Metaculus questions and forecasting initiatives.

acx
Feb 14, 2022 2,169 words 40 likes 204 comments Listen · 21 min Read Read

Mantic Monday: Dogs In Wizard Hats

Scott discusses recent developments in prediction markets, including new platforms, features, and current market predictions on various topics.

acx
Dec 27, 2021 2,603 words 41 likes 95 comments Listen · 24 min Read Read

Mantic Monday: Let Me Google That For You

Scott Alexander reviews recent developments in prediction markets, including Google's internal market and Metaculus' 'fortified essays', while discussing challenges and applications in various fields.

acx
Dec 20, 2021 2,525 words 41 likes 125 comments Listen · 23 min Read Read

MM: Omicron Variant

Scott Alexander analyzes prediction market forecasts about the Omicron COVID-19 variant, discussing its potential transmissibility, lethality, and prevalence.

acx
Nov 29, 2021 554 words 88 likes 177 comments Listen · 6 min Read Read
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