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1inch Fusion vs CoW Swap

How 1inch Fusion and CoW Swap differ on type, protection, rebates and what they’re built for.

1inch FusionCoW Swap
TypeIntent DEXBatch-auction DEX
How it worksYou sign an order (intent) rather than broadcasting a public tx; resolvers compete to execute it on-chain, absorbing MEV risk and often improving your price. Failed orders cost no gas.Orders settle in batches at one uniform clearing price, chosen by competing solvers, with Coincidence-of-Wants matching — removing the ordering advantage MEV bots exploit. Same team as MEV Blocker.
Protects againstSandwiching/frontrunning via off-chain intentsSandwiching/frontrunning via uniform-price batch auctions
RebatesBetter execution price instead of a cash rebatePrice surplus returned to you
ChainsEthereum + major L2sEthereum, Gnosis, Arbitrum, Base
SetupSwap on 1inch with Fusion modeTrade on CoW Swap
Best forSwappers who want gasless, protected tradesSpot swaps that want best price + protection

1inch Fusion

  • Gasless swaps (no gas on unfilled orders)
  • MEV-protected by design
  • Often better price via resolver competition
  • Only for swaps via 1inch, not arbitrary txs
  • Execution depends on resolver competition

CoW Swap

  • MEV-protected by design (batch auctions)
  • Coincidence-of-Wants can beat AMM price
  • Gasless limit orders
  • Swaps only, not arbitrary transactions
  • Batch settlement adds some delay

Bottom line

Pick 1inch Fusion for swappers who want gasless, protected trades; pick CoW Swap for spot swaps that want best price + protection.