Fenrock AI develops specialized AI agents for banking back office operations, targeting small- to mid-sized US banks. The platform focuses on compliance use cases and aims to help banks dramatically scale back office functions while improving regulatory exam outcomes and efficiency ratios. By automating routine compliance and operational work, Fenrock seeks to reduce the cost and headcount required to run a bank's back office. It is a Y Combinator Winter 2026 company based in the San Francisco Bay Area.