usage-metering
(2)
Zenskar
Zenskar is an AI-native billing and revenue automation platform for complex B2B businesses. It combines usage-based billing, revenue recognition (ASC 606/IFRS 15), collections, usage metering and SaaS analytics into a single order-to-cash system, layering AI agents on top so finance teams can automate invoicing, dunning and month-end close without engineering support. Founded in 2021 by Apurv Bansal and Saurabh Agarwal, the New York-based company has raised roughly $24-63M and serves SaaS, cloud infrastructure, AI and fintech companies with dynamic pricing, prepaid credits, multi-entity and multi-currency needs.
Lago
Lago is an open-source billing and metering platform that lets companies build usage-based, subscription, and hybrid pricing models without building a homegrown billing stack from scratch. Founded in 2021 by two early Qonto employees, it offers a free, self-hostable core plus managed cloud tiers, and is used by companies such as Mistral AI, PayPal, Groq and Synthesia to meter events and issue invoices at scale.