Comparison · updated July 2026
Manifold Markets vs Interactive Brokers Forecast Contracts
Manifold Markets and Interactive Brokers Forecast Contracts 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.
Manifold Markets
Play-money prediction market platform with real communities and calibration data.
Interactive Brokers Forecast Contracts
CFTC-regulated event contracts inside the IBKR trading platform.
Rating
Manifold Markets
4.3
Interactive Brokers Forecast Contracts
4.1
Best for
Manifold Markets
Forecasters and researchers
Interactive Brokers Forecast Contracts
Existing IBKR clients
Regulation
Manifold Markets
Play-money / sweepstakes
Interactive Brokers Forecast Contracts
CFTC-regulated
US availability
Manifold Markets
Available
Interactive Brokers Forecast Contracts
Available
Fees
Manifold Markets
Free (play-money)
Interactive Brokers Forecast Contracts
$0.02–$0.10 per contract
Mobile
Manifold Markets
Good
Interactive Brokers Forecast Contracts
Good
Markets
Manifold Markets
Politics, AI, Culture, Sports, Economy
Interactive Brokers Forecast Contracts
Economy, Financial events, Politics
Payment
Manifold Markets
Interactive Brokers Forecast Contracts
Founded
Manifold Markets
Interactive Brokers Forecast Contracts
Verdicts
Who wins, category by category
Best for beginners
Manifold Markets
Cleaner onboarding and a more polished consumer experience.
Best for regulation
Interactive Brokers Forecast Contracts
Operates as a CFTC-designated contract market.
Final take
Should you choose Manifold Markets or Interactive Brokers Forecast Contracts?
Manifold Markets comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose Manifold Markets for forecasters and researchers, and Interactive Brokers Forecast Contracts for existing ibkr clients.