Pump.fun has made Pump Bridge the default route for crosschain trades in its mobile app, replacing Relay. The company says its in-app test found faster buys, fewer errors and a smaller execution gap. Those figures come from Pump.fun, though, and have not been independently verified.
- Pump.fun reported average buy times of 1.95 seconds with Pump Bridge and 3.88 seconds with Relay.
- Reported buy error rates were 0.9% and 11.2%, respectively.
- The comparison covered more than 400, 000 trade outcomes in Pump.fun’s app.
- A smaller execution gap does not guarantee lower total costs.
What Pump.fun tested
Pump.fun says its randomized test ran from September 28 to October 7, but did not specify the year in the information accompanying the results. The company reported more than 400, 000 trade outcomes involving Robinhood, BSC, Base, Arc and Ink.
According to Pump.fun, users were assigned to Pump Bridge or Relay, then reassigned between the services several times. The company has made the underlying data available for outside review, but the results have not been independently verified here.
“Trade outcomes” is Pump.fun’s description of the sample. The available details do not say whether that means unique transactions, attempts or another unit of measurement. They also leave out parts of the test methodology, including how failed or abandoned buys were counted, whether routes and conditions were balanced, and how network congestion affected results.
Faster buys and fewer reported errors
Pump.fun reported an average buy completion time of 1.95 seconds with Pump Bridge, compared with 3.88 seconds with Relay. The fastest 10% of Pump Bridge buys took 1.23 seconds. The fastest 10% on Relay took 2.75 seconds. For the slowest 10%, the reported times were more than 4.21 seconds and 7.36 seconds, respectively.
The company also said 90% of Pump Bridge buys completed before a “typical” Relay transaction. Without a definition of “typical” or details on the statistic behind that claim, it is harder to interpret than the average and percentile figures.
The biggest reported difference was in buy errors. Pump.fun put the rate at 0.9% for Pump Bridge and 11.2% for Relay, calling that a 92% reduction. The relative reduction matches those rates, but the arithmetic does not confirm how the company measured them.
At those reported rates, 10 attempts per day would mean about 1.12 errors daily across a comparable set of Relay attempts, compared with roughly one error every 11 days for Pump Bridge attempts. That illustration is based on the company’s figures, not a prediction for any particular trader.
What the speed figures can and cannot tell us
Crosschain trades move value between separate blockchain networks. They can involve communication between networks and confirmation on the destination chain, so timing depends on the route and conditions at the time. A “bridge” is not one uniform technology. Services can use different designs, liquidity arrangements and security assumptions.
Pump.fun estimates a theoretical minimum completion time of about 1.1 seconds, based on network communication and destination-chain confirmation. It says its fastest recorded buys came within 0.13 seconds of that estimate. This is Pump.fun’s estimate, not a universal technical limit for crosschain transactions.
The test details do not say when the completion timer starts or stops, or break down results by route, trade size, market conditions or network congestion. Those details matter. A benchmark from one app during one test period does not show how Relay performs in other integrations or how Pump Bridge will perform under different conditions.
A narrower execution gap is not automatically a discount
For completed USDC buys valued below $500, Pump.fun reported a median execution gap of 3.0% with Pump Bridge and 3.6% with Relay, about 17% smaller with its new route. The company describes the execution gap as the difference between a reference spot price and the price reflected in the tokens the buyer ultimately receives. The available details do not identify the reference-price source or say whether the measure includes fees.
Pump.fun also estimated that making 10 buys worth $500 each day could save about $11, 000 a year. The calculation comes to roughly $30 a day: a 0.6-percentage-point difference applied to $5, 000 in daily purchases, multiplied by 365 days, equals about $10, 950.
That estimate is conditional, not a demonstrated saving. The reported execution-gap comparison covers buys below $500, while the projection assumes buys of exactly $500. It also treats the difference between median gaps as if it directly translated into savings for an individual trader, which the available results do not establish.
Pump.fun says Pump Bridge currently charges no separate bridging fee. Other trading costs may still apply. The fee information provided says users without a referral code pay 0.45% per trade, but does not say that charge is specific to Pump Bridge. A smaller execution gap alone cannot show whether a user’s total cost is lower after applicable fees.
What comes next
Pump.fun is a meaningful product change if the reported results hold up. But the figures answer a narrow question: how the two routes performed in Pump.fun’s app during the company’s test. They do not establish a general performance ranking between Pump Bridge and Relay.
Independent analysis of the data could clarify what counted as an outcome, how repeated assignment was handled, and whether the reported differences persist across routes, trade sizes and network conditions. Until then, Pump.fun’s figures are promising company-reported results, not a guarantee that every user will get a faster or cheaper trade.
Key questions about Pump Bridge
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What changed in Pump.fun’s app?
Pump Bridge replaced Relay as the default route for crosschain transactions in Pump.fun’s mobile app.
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What did Pump.fun report about speed and errors?
The company reported average buy times of 1.95 seconds for Pump Bridge and 3.88 seconds for Relay, with error rates of 0.9% and 11.2%, respectively. The figures come from Pump.fun’s in-app test and have not been independently verified here.
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Does Pump Bridge guarantee cheaper trades?
No. Pump.fun reported a smaller median execution gap for completed USDC buys below $500, but that measure does not establish an individual user’s savings or total cost after fees.
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Does Pump Bridge charge a separate bridging fee?
Pump.fun says it currently does not. Other trading costs may still apply.
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What would help verify the reported advantage?
Independent analysis of the underlying data, with clear definitions and breakdowns by route, trade size and network conditions, would show how widely the results hold.