From the source

How Harvey Uses Harvey

Harvey's legal team reports saving 20-40 attorney hours per week using its own platform.

Harvey's in-house legal team uses the Harvey platform to save an estimated 20-40 attorney hours per week by automating repetitive tasks such as drafting contract language, generating first drafts of documents, and querying a Vault of customer contracts.

The team reports that tasks like reviewing hundreds of contracts for infrastructure changes, which previously took 15+ attorney hours, can now be completed in under two hours using Vault.

From the source
Internally, we estimate our legal team saves around 20-40 attorney hours per week, but as I will discuss below, it can vary somewhat from week to week.
harvey.ai