In a significant development, Hyperliquid has unveiled its fee structure for outcome tokens, signaling an impending mainnet launch. The prediction market sector has witnessed a staggering 300% surge in trading volume in 2025, reaching $63.5 billion, and Hyperliquid is strategically building its infrastructure to compete with established players like Kalshi and Polymarket.
Key highlights of the fee structure include zero fees for opening positions, with fees only applicable when closing or settling trades. The structure encompasses six scenarios, including minting, trading, burning, and settlement. Furthermore, traders utilizing Hyperliquid's aligned quote tokens can 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 alongside perpetuals and spot positions in a single account, positioning Hyperliquid to rival platforms like Polymarket. The company's previous upgrade, HIP-3, has already demonstrated significant traction, with permissionless perpetuals accounting for over 35% of the platform's trading volume since its introduction in October 2025. Currently, outcome tokens are available on testnet, with a mainnet launch date yet to be confirmed.