Comparison · updated July 2026
Metaculus vs ProphetX
Metaculus and ProphetX are two of the most discussed prediction market platforms in the US. Here's a side-by-side look at how they compare on the factors that actually matter for traders.
Metaculus
Community forecasting platform focused on calibration and long-horizon questions.
ProphetX
Peer-to-peer sports betting exchange.
Rating
Metaculus
4.4
ProphetX
3.9
Best for
Metaculus
Serious forecasters
ProphetX
Exchange-style sports bettors
Regulation
Metaculus
Non-profit / educational
ProphetX
State-by-state
US availability
Metaculus
Available
ProphetX
Available
Fees
Metaculus
Free
ProphetX
1–2% commission
Mobile
Metaculus
Good
ProphetX
Good
Markets
Metaculus
AI, Politics, Economy, Culture
ProphetX
Sports
Payment
Metaculus
ProphetX
Founded
Metaculus
ProphetX
Verdicts
Who wins, category by category
Best for beginners
Metaculus
Cleaner onboarding and a more polished consumer experience.
Final take
Should you choose Metaculus or ProphetX?
Metaculus comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose Metaculus for serious forecasters, and ProphetX for exchange-style sports bettors.