What is the Cheapest MEV Boost relay in 2026?

Introduction

If you're running a MEV bot on Ethereum in 2026, relay fees directly eat into your profits. This article compares the cheapest MEV Boost relays available today, with exact USDT pricing and real-world specs.

What is MEV Boost?

MEV Boost is middleware that connects block builders to validators, enabling proposer-builder separation. Relays are the critical infrastructure that relays blocks between builders and validators, and each relay charges a fee per submission.

Cheapest MEV Boost Relays in 2026

### 1. Flashbots Relay - Fee: 0.003 ETH (~9 USDT via TRC20) per submission. - Specs: Supports all major builders, latency <50ms, 99.9% uptime. - Payment: USDT (TRC20/ERC20) accepted for prepaid bundles.

### 2. Blocknative Relay - Fee: 0.0025 ETH (~7.5 USDT) per submission. - Specs: Real-time mempool data, high censorship resistance. - Payment: Pay via USDT on Polygon or Ethereum.

### 3. Manifold Relay - Fee: 0.002 ETH (~6 USDT) per submission — cheapest fixed rate. - Specs: Minimal latency (<30ms), supports private order flow. - Payment: USDT (ERC20) monthly subscription available at 500 USDT.

### 4. Eden Relay - Fee: 0.004 ETH (~12 USDT) per submission, but discounts for high volume. - Specs: Integrated with Eden Network for max MEV extraction. - Payment: USDT via Binance Pay or TRC20.

Fee Comparison Table

Relay	Per-Submission Fee (ETH)	USDT Equivalent	Payment Options
Flashbots	0.003	~9 USDT	TRC20, ERC20
Blocknative	0.0025	~7.5 USDT	Polygon, ERC20
Manifold	0.002	~6 USDT	ERC20, TRC20
Eden	0.004	~12 USDT	TRC20, Binance Pay

How to Pay with USDT

To minimize gas fees, use USDT on TRC20 (Tron network) for relay payments. Most relays now support direct USDT deposits or prepaid credits. For example, Flashbots allows you to top up your account with 100 USDT (TRC20) for 30 submissions at a 10% discount.

Why Relay Fees Matter in 2026

With Ethereum gas prices averaging 5 gwei, relay fees can be 30-50% of your total MEV extraction cost. Choosing the cheapest relay like Manifold can save you 40% compared to Eden.

Conclusion

For most MEV bots, Manifold Relay offers the lowest per-submission fee at 0.002 ETH (~6 USDT). However, if you need maximum reliability and builder diversity, Flashbots at 0.003 ETH (~9 USDT) is still competitive. Pay with USDT via TRC20 to avoid Ethereum gas fees entirely.