Lago

Lago is an open-source cloud billing platform designed to manage usage-based billing, subscriptions, and complex hybrid pricing models. It provides real-time metering for various usage metrics, including tokens, GPUs, and credits, allowing businesses to track consumption across different services. The platform supports automated invoicing, accrual-basis revenue recognition, and cash collection for hybrid billing scenarios.

This solution is built to handle enterprise-level requirements, supporting self-hosted deployments and providing deep revenue analytics across all billing streams. It includes a comprehensive suite of financial tools such as real-time credit balances, spend alerts, and AI-powered billing intelligence. Developers can integrate the system using its API, CLI, and MCP, which includes full OpenAPI documentation and SDK support.

Lago is used by companies such as Mistral AI, PayPal, and CoreWeave. The system is designed to help engineering teams ship pricing changes without creating bottlenecks, while finance and operations teams gain centralized control over invoice data and revenue reporting. The platform allows users to define entitlements and manage complex pricing structures directly within the billing system.

Best for

• SaaS companies needing usage-based billing for tokens or compute time.
• Enterprises requiring complex, multi-product billing systems.
• Product teams that need to ship pricing changes independently of engineering cycles.
• Organizations that require self-hosted, open-source billing infrastructure.
• Fintech and IoT companies needing auditable, real-time billing for device-level usage.

Frequently asked questions

Is Lago open-source?

Lago is an open-source project that can be self-hosted by users.

What types of pricing models does Lago support?

It supports usage-based billing, subscriptions, and hybrid pricing models that combine different billing methods.

How does Lago handle revenue recognition?

It supports accrual-basis revenue recognition, allowing revenue to be recognized based on billing data.

Can I use Lago for AI products?

Yes, the platform is designed to meter and bill for AI usage, including tokens, GPUs, and credits.

What developer tools are included with Lago?

Developers have access to an API, CLI, MCP, and a Developer Hub that includes OpenAPI documentation and webhooks.

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