Update
Comparison of Trading Fees Across Prediction Markets
A comparison of trading fees for a $100 trade at 50¢ odds across three major prediction market platforms: Hyperliquid HIP-4 ($0.07), Polymarket (crypto) ($1.56), and Kalshi ($3.50). Hyperliquid is free to open a position, while Polymarket's crypto taker fee peaks at 1.56% around 50¢ odds. Kalshi's fee depends on contract price and can be higher on long-shot bets.