Open-source billing platform for usage-based, subscription, and hybrid pricing with real-time metering and automated invoicing.
Lago is an API-first, open-source (AGPLv3) billing platform for AI, SaaS, fintech, IoT, and infrastructure companies needing flexible, high-volume billing without vendor lock-in. It handles real-time usage metering (API calls, tokens, compute, storage, seats), subscriptions, prepaid credits, automated invoicing, multi-currency billing, entitlements, and revenue analytics. Lago processes up to 1,000,000 billing events per second and can be deployed on cloud, VPC, on-premise, or self-hosted. It integrates with payment providers Stripe, Adyen, GoCardless, and Cashfree, and offers an MCP server for AI-assisted billing operations. Lago is a product of Lago.
For people
For agents