Best mev protection in 2026

Ethereum RPC endpoint running a backrun-only order flow auction. Strongest on rebate published and reaching the end user's address (9/10): 90% of the backrun profit is "paid to the user that sent the transaction (tx.origin), immediately in the same block" (mevblocker.io FAQ). Self-published cumulative totals: "5.5K+ ETH rebated to users", "$26 USD value of median rebate" across "62M+ transactions" and "$219B+ volume protected". Coverage of the January… Weakest on independence and quality of the protection evidence (5/10): Ranked best on every metric by arXiv:2505.19708 — a paper authored by Paul Janicot and Alex Vinyas of CoW DAO Research, i.e. MEV Blocker's own co-creator, not an independent party. Its own documentation also contradicts itself on the same page: "MEV Blocker processes around 10% of daily Ethereum transactions" appears… Published price: Free to users.

Best for: Rebate published AND reaching the end user's address — 9/10

Original private RPC, now routed through Flashbots' BuilderNet. Strongest on rebate published and reaching the end user's address (7/10): 90% of MEV refunds and 100% of gas fee refunds go to tx.origin — the second-best published terms here and paid to the trader, not an integrator. But eligibility is narrow: "Flashbots Protect provides refunds for transactions in blocks landed by BuilderNet", and BuilderNet built only 15.72% of blocks (1,025 of ~6,520)… Weakest on independence and quality of the protection evidence (6/10): Best-documented mechanism in the set — hint levels, refund splits and BuilderNet eligibility are all written down and falsifiable, and the docs openly admit the exclusivity trade-off ("Transactions sent exclusively to Flashbots RPC receive higher refunds than those multiplexed to other builders"). But Flashbots… Published price: No user fee published. Refunds: "90% of MEV refunds are sent to `tx.origin`" with 10% to the validator, and "100% of gas fee refunds are sent to `tx.origin`".

Best for: Rebate published AND reaching the end user's address — 7/10

Intent-based DEX settling trades in batch auctions via solvers. Strongest on order-flow privacy in practice (6/10): Trades never touch the public mempool as user transactions — orders are signed intents settled by bonded solvers in a batch with a uniform clearing price, so there is no user transaction for a sandwich bot to bracket. The order is however visible to the competing solver set during the auction, and protection is… Weakest on independence and quality of the protection evidence (4/10): Fee mechanics including the 0.98% cap are published in full, which is more than most here disclose. But CoW DAO Research authored arXiv:2505.19708, the study most often cited as the neutral benchmark for this category, and it concludes CoW's own MEV Blocker "stands out for being the only RPC that is either the best or… Published price: Volume fee "Standard Assets: 2 basis points (bps)" and "Correlated Assets (Stables/RWAs): 0.3 basis points (bps)".

Best for: Order-flow privacy in practice — 6/10

Ethereum block builder with a direct bundle-submission endpoint. Strongest on order-flow privacy in practice (9/10): The strongest explicit non-leak commitment in the set, and the only one that also rules out self-dealing: "We will never unbundle a bundle, and will never broadcast any bundles or private transactions to the public mempool", plus "To avoid any conflict of interest, we don't do any searching on Ethereum." No searcher… Weakest on rebate published and reaching the end user's address (2/10): The endpoint supports refundPercent and refund-recipient, so rebates are mechanically possible, but no default rate is published anywhere in the docs and there are no self-reported or measured payout figures. In practice the parameter is set by the searcher or integrator submitting the bundle, not by an ordinary… Published price: No fee, subscription or rebate rate published. The homepage presents a block builder that accepts bundles ("We support the standard endpoints and eth_sendBundle with replacements & cancellations, as well as refundPercent"). The API docs list only a "Rate limit: 50 requests/sec" and define refundPercent as an optional bundle field, "the percentage (from 0 to 99)", set by whoever submits the bundle. It is not a priced consumer product.

Best for: Order-flow privacy in practice — 9/10