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📖 The ACX 2025 Prediction Contest Is Open!

The Astral Codex Ten Prediction Contest is back with an expanded $10,000 prize pool! Test your forecasting skills across geopolitics, technology, economics, and more with questions curated by Scott Alexander. Make your predictions by January 31 to compete.

🔭 The Bridgewater x Metaculus Forecasting Contest Goes Global — Feb 3

For the second year, Metaculus is teaming up with Bridgewater Associates to host a competition featuring $25k in prizes and potential opportunities with the asset management firm — and this year, forecasters from around the globe can compete.

Start here to register for the February 3rd competition, warm up on practice questions, and learn about the separate Open and Undergraduate leaderboards.

Conditional Cup

Start DateOct 18, 2023
End DateDec 31, 2024
Questions50
Events don't take place in isolation. Often we want to know the likelihood of an event occurring if another one does. Conditional pairs enable forecasters to predict the probability of an event given the outcome of another, and provide forecast consumers with greater clarity on the relationships between events.

This specialized tournament showcases conditional forecasting, with one new conditional question presented each week. Over 14 months, forecasters will predict both branches of ~60 conditional questions, and at the end we will recognize our first champion of conditional forecasting.

Questions