How CoW Swap and Flashbots Protect differ on type, protection, rebates and what they’re built for.
| CoW Swap | Flashbots Protect | |
|---|---|---|
| Type | Batch-auction DEX | Private RPC |
| How it works | 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. | Sends your transaction privately to the Flashbots block-building auction. MEV-Share selectively shares hints so searchers can bid to back-run it, sharing the profit with you. |
| Protects against | Sandwiching/frontrunning via uniform-price batch auctions | Frontrunning, sandwiching & failed-tx reverts |
| Rebates | Price surplus returned to you | 90% of back-run MEV + gas-fee refunds |
| Chains | Ethereum, Gnosis, Arbitrum, Base | Ethereum |
| Setup | Trade on CoW Swap | Add RPC rpc.flashbots.net to your wallet |
| Best for | Spot swaps that want best price + protection | The conservative, battle-tested default |
Pick CoW Swap for spot swaps that want best price + protection; pick Flashbots Protect for the conservative, battle-tested default.