Vault Law Firm Rankings 2025. Vault recently published the 2025 edition of all manner of its closely watched rankings for the largest law firms in the country, proving that money — in the form of cravath’s. This year, more than 20,000 associates rated the reputations of firms other than their own.

O’melveny & myers llp has won the title of best law firm to work for. These rankings are based on associates’ assessments of their own firms.