📖 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

Question

What will be the mass in eV of the next fundamental particle to be discovered?

8
9
Total Forecasters26
Community Prediction...

Make a Prediction

PDF

CDF

weight:
My Prediction
community
<100B
lower 25%
median
upper 75%
>1×10¹⁶
...
...
...
...
...
32.2%
<100B
6.279T
1.8×10¹⁵
18.3%
Authors:
tetraspace
Opened:
Closes:
Scheduled resolution:
Natural Sciences
Physics
Standard Model
Higgs boson
Particle physics
Large Hadron Collider
Quantum mechanics
Future Circular Collider
Particle Data Group
Supersymmetry

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