In a significant development, Hyperliquid has unveiled its fee structure for outcome tokens, paving the way for a potential mainnet launch. The prediction market sector has witnessed explosive growth, with trading volumes soaring over 300% in 2025 to reach $63.5 billion.
By establishing a robust infrastructure, Hyperliquid aims to compete with established players like Kalshi and Polymarket. A key feature of the platform is the absence of fees for opening positions, with charges only applying when trades are closed or settled. The fee structure outlines six distinct 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, facilitated by the HIP-4 upgrade, will enable users to trade binary contracts on real-world events, in addition to perpetuals and spot positions, all within a single account. This move is seen as a strategic attempt to rival platforms like Polymarket, which has announced plans to introduce perpetual trading. Hyperliquid's previous upgrade, HIP-3, has already shown 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 only available on the testnet, with no confirmed mainnet launch date.