Want to dive into Scott Alexander's work and his thousands of blog posts? This fan website lets you sort and do semantic search through the whole codex. Enjoy!

See also Top Posts and All Tags.

Tag: ACX Prediction Contest

Or pick a range
–
min
Blog
Only
Year
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
Tags
Browse all 5743
No results found
ACX Prediction Contest (4)
study critique (270)
book review (221)
AI (112)
economics (105)
effective altruism (105)
education (93)
creative writing (91)
debate (89)
forecasting (89)
politics (89)
prediction markets (88)
science (85)
AI safety (79)
media criticism (76)
neuroscience (76)
rationality (76)
psychiatry (73)
psychology (72)
mental health (69)
highlights from the comments (68)
No results found
study critique (270)
book review (221)
AI (112)
economics (105)
effective altruism (105)
education (93)
creative writing (91)
debate (89)
forecasting (89)
politics (89)
prediction markets (88)
science (85)
AI safety (79)
media criticism (76)
neuroscience (76)
rationality (76)
psychiatry (73)
psychology (72)
mental health (69)
highlights from the comments (68)
Links to
 No results found
domain: slatestarcodex.com (1127 posts)
domain: wikipedia.org (896 posts)
domain: astralcodexten.com (560 posts)
domain: lesswrong.com (491 posts)
domain: twitter.com / x.com (445 posts)
domain: nih.gov (333 posts)
domain: reddit.com (321 posts)
domain: amazon.com (276 posts)
domain: substack.com (268 posts)
domain: google.com (235 posts)
domain: nytimes.com (229 posts)
domain: wordpress.com (175 posts)
domain: tumblr.com (159 posts)
domain: vox.com (159 posts)
domain: washingtonpost.com (143 posts)
domain: marginalrevolution.com (140 posts)
domain: sciencedirect.com (131 posts)
domain: theguardian.com (130 posts)
subreddit: slatestarcodex (130 posts)
domain: youtube.com (128 posts)
Remember which posts I've read on this device
4 posts
Date
Length
Likes
Comments
AI (112) forecasting (89) Metaculus (34) US politics (32) contest (14) prize money (4) ACX Prediction Contest (4) international politics (2)

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
forecasting (89) prediction markets (88) Metaculus (34) prediction (16) Polymarket (10) ACX Prediction Contest (4) AI agents (3)

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
forecasting (89) prediction markets (88) Metaculus (34) cryptocurrency (30) Mantic Monday (22) AI progress (15) Ukraine war (4) ACX Prediction Contest (4)

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
prediction markets (88) data analysis (32) Polymarket (10) contest rules (9) ACX Prediction Contest (4) collaboration (2) corrections (2)

Two Small Corrections And Updates

Scott offers corrections about Polymarket's status and updates on the 2022 prediction contest, including calls for collaboration and ideas.

acx
Feb 8, 2022 231 words 15 likes 14 comments Listen · 3 min Read Read
Per page:
Showing 1 to 4 of 4 results
Get these search results in an EPUB

Your filters match 4 posts.

Posts to include
–
Leave empty to keep the defaults. Range cannot exceed 500 posts.
Download now

Generates an EPUB right now and downloads it to your device.

Send to email

Generates an EPUB in the background and emails you a temporary download link.

Your email is not shared with anyone.

Email address

To send to your Kindle, just use this link.