OpenZeppelin

OpenZeppelin audits run from 3 to 10 weeks depending on codebase size and complexity. The firm prioritises thoroughness over speed — its audit process involves multiple researchers reviewing the same codebase independently, which adds time but significantly improves the quality of findings. Teams should plan for 8-12 weeks minimum lead time to account for scheduling, the audit itself, and remediation review.

OpenZeppelin's pricing reflects its premium positioning — specific figures are available via scoping discussion, but expect costs in the six-figure range for significant DeFi protocols. The firm has audited Compound, Aave, and Uniswap — the three protocols that defined DeFi — and its credential carries recognisable signal to sophisticated users and institutional investors that justifies the premium.

Yes — a long waitlist is expected for premium projects, given OpenZeppelin's reputation and limited researcher capacity. Teams should engage the firm as early as possible — 3-6 months before a needed audit completion is not excessive for complex protocols. The contact process via openzeppelin.com initiates the scoping and scheduling discussion.

OpenZeppelin created the most widely-used smart contract library in existence — used in tens of thousands of projects globally. Their security engineers have reviewed more production Solidity code than any other firm, giving them unmatched pattern recognition for how OpenZeppelin library components behave in complex DeFi compositions. This institutional memory of production code behaviour is impossible to replicate without the same volume of real-world contract review.

OpenZeppelin audited Compound, Aave, and Uniswap — the three protocols that defined the DeFi ecosystem. These audits represent some of the highest-stakes smart contract security work in history, given the billions in TVL these protocols have held. A project audited by OpenZeppelin shares a credential lineage with the foundational protocols of DeFi.

No — OpenZeppelin audits all Solidity smart contracts regardless of whether they use OpenZeppelin libraries. However, projects that do use OpenZeppelin's library components benefit from the firm's particularly deep knowledge of how those specific components behave, including edge cases and known integration patterns. Non-OpenZeppelin codebases are fully within scope for audit.