0x vs CoWSwap
Neutral on-chain benchmarking of execution quality, MEV protection, and overall trade execution.
Protocol Scorecard
0x and CoWSwap are both DEX aggregators: rather than holding liquidity themselves, they split each order across many underlying pools to find the best available price. Because both compete on routing quality, the difference between them shows up in execution — realized slippage and MEV exposure — far more than in their headline rates.
Across the trades ClearTrace benchmarked, 0x posted an execution-quality score of 91.0/100 versus 84.7/100 for CoWSwap — a clear edge of 6.3 points. The score blends realized slippage with an MEV/toxicity measure, so a higher number means traders kept more of their expected value. 0x was measured over 53,903 trades and CoWSwap over 14,604.
On this data, 0x holds the stronger execution-quality score, but the gap reflects routing and MEV protection rather than one venue being universally better — results shift with trade size, token pair, and market conditions. We recalculate these scores on every data refresh; see our methodology for the full approach.
Frequently Asked Questions
Which has better execution quality, 0x or CoWSwap?
Based on ClearTrace's on-chain benchmarking, 0x edges out CoWSwap on execution quality, 91.0/100 versus 84.7/100 (a 6.3-point gap).
Does 0x or CoWSwap offer better MEV protection?
MEV protection is captured by our toxicity measure, where lower is better. 0x scored a toxicity of 9.0 and CoWSwap 15.3, so 0x showed somewhat stronger protection against value extraction such as sandwich attacks over the sample.
Is 0x or CoWSwap better for large trades?
For large orders, aggregators such as 0x can split a trade across multiple pools to reduce price impact, which often helps on size. The right venue still depends on the specific pair and amount — the live dashboard tracks current execution quality.