pump.fun has launched perpetual contract trading on its frontend using Hyperliquid's Builder Code mechanism. pump.fun's official documentation states that pump.fun charges a Builder Fee of up to 0.10% of each order's notional value. The documentation also states that pump.fun charges up to 0.25% for each asset transfer to or from Hyperliquid through the in-app cross-chain bridge, in addition to the bridge operator's fees.