0x vs CoW Protocol 2026: 2 live benchmarks compared

Name: 0x vs CoW Protocol OpenChainBench measurements
Creator: OpenChainBench
License: https://creativecommons.org/licenses/by/4.0/

OpenChainBench

0x vs CoW Protocol

Split decision: 0x leads on Fastest EVM swap quote API (218 ms vs 2.38 s); CoW Protocol leads on Best DEX aggregator by quote output (3.77 bps vs 18.5 bps). Data as of 2026-10-22 UTC.

Read methodology Last measured Thu, 22 Oct 2026 01:26:17 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.

Side by side measurements

Fastest EVM swap quote API

Aggregators

Headline: All chains

Leads

218 ms

p99: 458 ms
rank: #1
samples: 3,414

CoW Protocol

Trails

2.38 s

p99: 4.71 s
rank: #9
samples: 2,881

Per chain · per region

Chain	Provider	US East	EU West	Singapore	Aggregate
Ethereum	0x	90 ms	232 ms	500 ms	274 ms
Ethereum	CoW Protocol	953 ms	811 ms	933 ms	899 ms
Base	0x	79 ms	151 ms	350 ms	193 ms
Base	CoW Protocol	2.79 s	2.58 s	2.82 s	2.73 s
Arbitrum	0x	113 ms	170 ms	350 ms	211 ms
Arbitrum	CoW Protocol	3.50 s	3.50 s	3.50 s	3.50 s

Quote latency

0xn/aCoW Protocoln/a

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

Aggregators

Headline: All chains

Trails

18.5 bps

p99: 26.4 bps
rank: #6
samples: 3,414

CoW Protocol

Leads

3.77 bps

p99: 11.9 bps
rank: —
samples: 2,881

Per chain

Chain	0x	CoW Protocol
Ethereum	19.2 bps	2.63 bps
Base	18.2 bps	2.13 bps
Arbitrum	19.6 bps	6.54 bps

Quote shortfall

0xn/aCoW Protocoln/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

0x vs CoW Protocol: which one is better?

0x and CoW Protocol are compared on 2 shared OpenChainBench benchmarks. 0x leads on Fastest EVM swap quote API. CoW Protocol leads on Best DEX aggregator by quote output. See the live table on this page for every metric.

Which is faster, 0x or CoW Protocol?

On the Fastest EVM swap quote API benchmark, 0x leads at 218 ms versus CoW Protocol at 2.38 s. Live measurement is updated continuously by the OpenChainBench harness.

Which is cheaper, 0x or CoW Protocol?

On the Best DEX aggregator by quote output benchmark, CoW Protocol leads at 3.77 bps versus 0x at 18.5 bps. Live measurement is updated continuously by the OpenChainBench harness.

How is the 0x vs CoW Protocol 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.