Overview
Flashbots conducts research and development to address Maximal Extractable Value (MEV) in stateful blockchains, starting with Ethereum. It builds tools and infrastructure that let validators participate in an open market for blockspace by selling blocks to builders, supported by proposer-builder separation (PBS) in Ethereum’s proof-of-stake system. The product works by enabling a permissionless, transparent market where builders propose blocks and validators select which block to publish, helping to maximize staking rewards while mitigating MEV’s negative effects and reducing concentration of power. The company differentiates itself by focusing specifically on MEV mitigation and PBS-enabled blockspace markets, providing the technical ecosystem for validators, developers, and miners to operate efficiently and fairly. Its goal is to create a sustainable, fair, and transparent MEV ecosystem that distributes rewards more broadly and minimizes harmful externalities.
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Simplify's take
What believers are saying
- Optimism partnered with Flashbots in 2026 to improve OP Stack sequencing.
- Uniswap's Unichain collaboration expands Flashbots into DeFi-focused L2 orderflow.
- Flashbots still actively hires, signaling product expansion and research demand.
What critics are saying
- EIP-7732 enshrined PBS threatens MEV-Boost's long-term role on Ethereum.
- BuilderNet centralization replaces external builder competition with Flashbots-controlled infrastructure.
- If Ethereum ships in-protocol PBS, Flashbots loses its core middleware monopoly.
What makes Flashbots unique
- Flashbots runs MEV-Boost, the dominant Ethereum PBS middleware, with BuilderNet and Protect.
- It migrated all builders, orderflow, and refunds to BuilderNet in December 2024.
- Its research-to-product loop spans FRPs, grants, and open-source infrastructure.
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