Pump.fun has launched Pump Bridge, a new in-house cross-chain trading service that now serves as the default route in its mobile app, replacing Relay. The announcement was made on October 22, following a randomized testing period from September 28 to October 7.
According to Pump.fun, Pump Bridge processed purchases in 1.95 seconds on average compared with 3.88 seconds for Relay, while the buy error rate fell from 11.2% to 0.9%—a reduction of roughly 92%. The company also reported a 17% smaller execution gap, with a median gap of 3.0% on Pump Bridge versus 3.6% on Relay, and said it currently charges no additional bridging fees.
The test covered more than 400,000 trade outcomes and 383,326 transactions across Robinhood Chain, BSC, Base, Arc, and Ink. Approximately 53% of transactions took place on Robinhood Chain and 39% on BSC. Pump.fun estimated that a trader making 10 purchases of $500 per day could save about $11,000 annually compared with using Relay if the observed execution difference continued.
The fastest 10% of Pump Bridge buys took 1.23 seconds, while the slowest 10% took more than 4.21 seconds, versus 2.75 seconds and 7.36 seconds for Relay. Pump.fun also estimated the theoretical minimum completion time for cross-chain buys at approximately 1.1 seconds, with its fastest recorded buys coming within 0.13 seconds of that estimate.
Pump.fun noted that wallets without a referral code now pay a 0.45% trading fee, and the launch intensifies competition with Fomo, which continues to use Relay. Pump.fun co-founder Alon criticized fees charged by competing platforms and highlighted the 0.45% fee. Neither Relay nor Fomo has publicly responded. The figures come from Pump.fun’s own testing and have not been independently verified across all trading conditions.
The launch follows Pump.fun’s introduction of perpetual futures through Hyperliquid on October 17. The company said it will continue developing Pump Bridge to further reduce transaction times and is making the underlying datasets publicly available for outside researchers.
