On-Chain Execution Data

1inch vs ParaSwap

Neutral on-chain benchmarking of slippage, revert rates, and overall execution quality.

Bottom line

Protocol Scorecard

ClearTrace on-chain execution benchmark: 1inch vs ParaSwap (data as of September 24, 2026). ClearTrace does not rank these two on slippage. More than half of 1inch's benchmarked fills on Ethereum settle in the taker's favour against the oracle baseline, so its score reflects the composition of that flow rather than execution cost, and it cannot be set against ParaSwap's. The revert rate is measured on the same chain and counts only consistently-succeeding senders (see the note below the table). A higher slippage score means lower realized slippage; a lower revert rate is better.
	1inch	ParaSwap
Slippage Score (0-100)	87.4 Ethereum	75.1 Ethereum
Revert Rate Ethereum · consistently-succeeding senders	0.27%	0.55%
Trades Analyzed Ethereum	21,112	6,398

Revert rates are measured on Ethereum and count only senders whose own transactions to these routers succeeded at least 90% of the time over the window, so they are bounded under 10% by that definition and are narrower than the share of all attempts that fail. See the methodology.

1inch and ParaSwap 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 flow ClearTrace benchmarked, 1inch posted a slippage score of 87.4/100 versus 75.1/100 for ParaSwap; the two are not ranked against each other here, for the reason given below. Both figures are measured on Ethereum, ClearTrace's publication chain. The score reflects realized slippage only, derived from median slippage versus a minute-level off-chain reference price (Dune prices.usd, an interpolated 5-minute exchange-aggregate feed and not a VWAP), where a higher number means lower slippage. The median is taken over individual fills, while the counts below are distinct transactions, and one transaction can contain several fills. MEV exposure and revert rates are tracked as separate metrics. 1inch was measured over 21,112 benchmarked transactions (76% of its benchmarked flow) and ParaSwap over 6,398 benchmarked transactions (42% of its benchmarked flow).

The other axis is reliability: a swap that reverts on-chain still costs gas and a missed price. On Ethereum, 1inch's revert rate is 0.27% over 84,341 transactions versus 0.55% over 30,404 for ParaSwap. Both figures count only senders whose own transactions to these routers succeeded at least 90% of the time over the measurement window (methodology v6), which is a filter on the outcome being measured: it holds the published rate under 10% by construction and drops anyone whose handful of swaps included a failure. Read it as the failure rate among consistently-succeeding senders, not as the share of all attempts that fail. Rates are recalculated on every data refresh; the live aggregator leaderboard carries the current per-chain numbers.

ClearTrace does not rank these two on slippage. More than half of 1inch's benchmarked fills on Ethereum settle in the taker's favour against the oracle baseline, so its score reflects the composition of that flow rather than execution cost, and it cannot be set against ParaSwap's. The slippage figure is the median absolute gap against the minute-level off-chain reference price, so it cannot tell a cost from a gain of the same size. Where most of a venue's fills land on the favourable side, the resulting number is describing what that flow is — market-maker inventory, vault rebalancing, searcher activity — rather than what a user would pay. Both figures stay published, and the reasoning is in our methodology write-up.

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Frequently Asked Questions

Which has better execution quality, 1inch or ParaSwap?

Does 1inch or ParaSwap offer better MEV protection?

ClearTrace publishes a slippage-based score and per-aggregator revert rates, not a per-aggregator MEV-protection score. On slippage the two are not comparable here: 1inch's ~12.6 bps is a median absolute gap over flow that mostly settles in the taker's favour, so it is not a cost a user would pay. For MEV specifically, the dashboard surfaces detected sandwich activity as a separate metric.

Is 1inch or ParaSwap better for large trades?

For large orders, aggregators such as 1inch 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.

What is the revert rate of 1inch vs ParaSwap?

A revert is a swap transaction that fails on-chain: the trader pays gas but gets no fill. On Ethereum, 1inch's revert rate is 0.27% and ParaSwap's is 0.55%. Both count only senders whose own transactions to these routers succeeded at least 90% of the time over the window, so the figure is the failure rate among consistently-succeeding senders rather than the share of all attempts that fail, and it is bounded under 10% by that definition. Rates are recalculated on every data refresh; per-chain numbers are on the ClearTrace aggregator leaderboard.