📖 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.

M

Group

What will be the world population in the following years?

9
5
28 forecasters

Make a Prediction

Populationresolution
Population25thmedian75th

PDF

CDF

This question is closed for predictions, and is waiting to be resolved
My Prediction
community
<7B
lower 25%
median
upper 75%
>9B
...
...
...
...
...
0.1%
8.096B
8.165B
8.229B
0.1%

Forecast Timeline

Authors:
casens
Opened:
Closes:
Scheduled resolution:
Social Sciences
2021-2025 Leaderboard
United Nations Department of Economic and Social Affairs
United Nations

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