Hyperliquid has unveiled its fee structure for outcome tokens, signaling an impending mainnet launch. The prediction market sector has seen a significant surge in trading volume, exceeding $63.5 billion in 2025, with Hyperliquid developing infrastructure to rival established players like Kalshi and Polymarket.
A key feature of the fee structure is the absence of costs for opening positions, with fees only applying when trades are closed or settled. The document outlines six scenarios, including minting, trading, burning, and settlement.
Traders utilizing Hyperliquid's aligned quote tokens benefit from reduced taker fees and increased maker rebates. The introduction of outcome tokens, as part of the HIP-4 upgrade, will enable users to trade binary contracts on real-world events, in addition to perpetuals and spot positions, within a single account, positioning Hyperliquid to compete with platforms like Polymarket.