Polymarket vs Kalshi — Which Prediction Market Is Better?
Compare Polymarket and Kalshi: fees, markets, regulation, and which platform gives you better odds.
Overview
Polymarket and Kalshi are the two largest prediction market platforms, but they serve different audiences. Polymarket is crypto-native (USDC on Polygon), unregulated, and has the deepest liquidity. Kalshi is CFTC-regulated, trades in USD, and is available to US residents with KYC. VoxOdds tracks both in real-time.
Fees
Polymarket charges ~2% on winnings (no fee on losing trades). Kalshi charges fees on both sides of a trade. For high-volume traders, Polymarket's fee structure is generally more favorable. Both platforms have no deposit fees for their native currency.
Available Markets
Polymarket leads in variety: politics, crypto, geopolitics, sports, culture, and more. Kalshi focuses on regulated event contracts: economics, elections, climate, and sports. Polymarket tends to create markets faster for breaking events. Kalshi's advantage is regulatory compliance and USD trading.
Liquidity & Odds
Polymarket typically has deeper liquidity on popular markets, resulting in tighter spreads. Use VoxOdds Compare Odds to see which platform offers the better price for any given market — sometimes the spread between them is significant enough for arbitrage.
Which Should You Use?
Use both. VoxOdds shows you where the odds are better for each market. For crypto-native traders, start with Polymarket. For US-based traders wanting regulatory protection, Kalshi is the safer choice. Ideally, have accounts on both to capitalize on price differences.
Ready to find your edge?
Browse live prediction markets, compare odds, and see what the crowd thinks.