CoW Protocol vs ParaSwap 2026: 2 live benchmarks compared

Name: CoW Protocol vs ParaSwap OpenChainBench measurements
Creator: OpenChainBench
License: https://creativecommons.org/licenses/by/4.0/

OpenChainBench

CoW Protocol vs ParaSwap

ParaSwap leads on both live benchmarks. ParaSwap wins on Fastest EVM swap quote API (221 ms vs 1.94 s), Best DEX aggregator by quote output (0.95 bps vs 3.03 bps). Data as of 2026-10-24 UTC.

Read methodology Last measured Sat, 24 Oct 2026 14:32:47 UTCWindow: rolling 24h2 shared benchmarks

CoW Protocol

CoW Protocol settles trades via batch auctions with coincidence-of-wants matching, MEV protection, and solver competition. CoW Swap is the reference frontend; the protocol settles flow from many integrators.

ParaSwap

DEX aggregator and DeFi middleware layer. The Augustus Router splits orders across AMMs, PMMs, and direct pools on 10+ EVM chains to minimize price impact and gas costs. Also offers a developer SDK for integrating best-execution routing into dApps and wallets.

Side by side measurements

Fastest EVM swap quote API

Aggregators

Headline: All chains

CoW Protocol

Trails

1.94 s

p99: 4.92 s
rank: #8
samples: 2,881

ParaSwap

Leads

221 ms

p99: 742 ms
rank: #1
samples: 3,601

Per chain · per region

Chain	Provider	US East	EU West	Singapore	Aggregate
Ethereum	CoW Protocol	991 ms	967 ms	1.71 s	1.22 s
Ethereum	ParaSwap	80 ms	220 ms	553 ms	284 ms
Base	CoW Protocol	933 ms	938 ms	1.47 s	1.11 s
Base	ParaSwap	71 ms	154 ms	355 ms	194 ms
Arbitrum	CoW Protocol	3.50 s	3.50 s	3.50 s	3.50 s
Arbitrum	ParaSwap	113 ms	169 ms	353 ms	211 ms

Quote latency

CoW Protocoln/aParaSwapn/a

Best DEX aggregator by quote output: who actually gives you more

Aggregators

Headline: All chains

CoW Protocol

Trails

3.03 bps

p99: 13.9 bps
rank: —
samples: 2,880

ParaSwap

Leads

0.95 bps

p99: 6.96 bps
rank: #3
samples: 3,600

Per chain

Chain	CoW Protocol	ParaSwap
Ethereum	2.14 bps	0.65 bps
Base	2.27 bps	1.22 bps
Arbitrum	4.68 bps	1.20 bps

Quote shortfall

CoW Protocoln/aParaSwapn/a

Every provider is asked for the same swap at the same second, and each answer is scored against the best of that round. The figure is how much less you would have received, in basis points. Quotes are not comparable between rounds: the market moves 30 to 37 bps in five minutes while the field sits inside 25. Two providers take a fee out of the quote and declare it, shown separately: giving up 25 bps to a toll is not routing badly.

Frequently asked questions

CoW Protocol vs ParaSwap: which one is better?

CoW Protocol and ParaSwap are compared on 2 shared OpenChainBench benchmarks. ParaSwap leads on Fastest EVM swap quote API. See the live table on this page for every metric.

Which is faster, CoW Protocol or ParaSwap?

On the Fastest EVM swap quote API benchmark, ParaSwap leads at 221 ms versus CoW Protocol at 1.94 s. Live measurement is updated continuously by the OpenChainBench harness.

How is the CoW Protocol vs ParaSwap comparison measured?

Every benchmark on this page uses the same open methodology, published at https://openchainbench.com/methodology. Data is CC-BY-4.0. Measurement harnesses are MIT-licensed.

How this pair was selected

Auto-generated pairs require: both providers in the same benchmark for seven consecutive days, at least 1000 samples per provider, observable third-party search demand, and a public /products/[slug] page on OCB. Editorially curated pairs (like this one) may publish early when search demand is high and data is accruing; panels with fewer than 100 samples are shown as provisional. The full pair ledger is versioned in the public repo.