In a significant development, Hyperliquid has unveiled its fee structure for outcome tokens, a crucial component of its prediction market-style trading platform, hinting at an imminent mainnet launch. The prediction market space has witnessed explosive growth, with trading volumes soaring over 300% in 2025 to reach $63.5 billion, and Hyperliquid is strategically positioning itself to compete with established players like Kalshi and Polymarket. A key aspect of Hyperliquid's fee structure is that opening a position is free, with fees only applicable when closing or settling a trade. The platform has outlined six scenarios covering token minting, trading, burning, and settlement.
Additionally, 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 perpetual and spot positions, all within a single account, as Hyperliquid aims to rival platforms like Polymarket. The company's previous upgrade, HIP-3, which introduced permissionless perpetuals for developers, has already accounted for over 35% of the platform's total trading volume since its introduction in October 2025.
Currently, outcome tokens are available only on the testnet, with no confirmed mainnet launch date announced.