Best Prediction Markets 2025: Full Platform Comparison
Verdict: Polymarket dominates in terms of trading volume and breadth of available markets. Kalshi stands out as the sole CFTC-authorised option for American participants. Manifold excels for recreational forecasting using virtual currency with no financial stakes. Throughout Europe and beyond, Polymarket accessed through PolyGram represents the optimal choice.
Prediction markets have surged dramatically since 2024. This guide examines how leading platforms stack up during 2025.
Polymarket — The Liquidity Leader
| Liquidity | $1.5B+ annual volume. Most substantial order books for political and cryptocurrency segments |
| Markets | Over 1,000 live offerings. Spanning elections, digital assets, athletics, research, and entertainment |
| Fees | Zero platform fee. Bid-ask spreads range from 1 to 3 cents |
| Currency | USDC via Polygon network (blockchain wallet mandatory) |
| Access | Worldwide availability excluding United States. Identity verification required |
| Best for | Professional traders possessing proprietary insights |
Kalshi — US-Regulated Alternative
Kalshi operates as the sole CFTC-authorised prediction exchange within America. It provides access for US residents who cannot participate on Polymarket and has experienced substantial growth. Trade-offs include narrower market selection relative to Polymarket, alongside regulatory constraints that restrict certain market categories.
Manifold Markets — Social Prediction
Manifold operates using fictional currency ("mana") in place of actual funds. This platform serves as an excellent resource for honing forecasting abilities and engaging with group-based predictions — yet lacks appeal for those seeking monetary returns. The ecosystem hosts exceeding 10,000 user-generated forecast categories.
Metaculus — Forecasting Platform
Metaculus consolidates predictive estimates from its specialist community. Without monetary incentives, it excels as a venue for establishing forecasting credentials and analysing international events. Researchers regularly reference its data when examining prediction performance.
Betfair — The Legacy Exchange
Betfair represents the pioneering betting exchange, processing vast sums across athletics and electoral markets each year. Strengths encompass traditional payment options, FCA authorisation, and robust athletics market depth. Limitations include 2-5% charges on net gains, absence of blockchain-based markets, and comparatively restricted election market breadth versus Polymarket.
Our Recommendation for 2025
For participants across Europe and internationally seeking maximum trading depth and comprehensive market selection: Polymarket via PolyGram. PolyGram streamlines blockchain requirements whilst providing unrestricted entry to Polymarket's complete matching engine. Start trading on PolyGram →