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Open-source billing infrastructure for usage-based monetization at scale.

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Reviews onG2Capterra
3 reviews tracked

The Bottom Line

Entry price

Paid plans only

Biggest pro

Handles extremely high event volumes for real-time accuracy

Biggest con

Requires technical expertise for self-hosting and integration

TL;DR - Lago

  • Open-source billing infrastructure for usage-based monetization.
  • Processes up to 1 million events per second for real-time billing.
  • Supports complex pricing models, hybrid plans, and enterprise-grade scalability.
Pricing: Paid only
Best for: Enterprises & pros

What is Lago?

Editorial review
Lago provides an open-source billing infrastructure designed for modern companies, particularly those with usage-based pricing models like AI, IoT, and enterprise SaaS. It enables businesses to ingest and process high volumes of usage data, up to 1 million events per second, and convert it into accurate invoices in real-time. The platform supports various complex billing models including consumption-based billing, prepaid credits, usage allowances, and hybrid plans combining usage with subscriptions. Lago empowers engineering, product, finance, and operations teams by offering a unified source of billing data. It allows for flexible pricing adjustments via API or a no-code UI, and provides tools for managing margins, setting alerts, and ensuring data sovereignty through self-hosting options. This makes it ideal for companies requiring robust, scalable, and customizable billing solutions that can adapt to rapidly evolving product offerings and customer demands.

Available on: Web

Pros & Cons

Pros

  • Handles extremely high event volumes for real-time accuracy
  • Offers flexibility for complex and hybrid pricing models
  • Provides an open-source solution for greater control and transparency
  • Empowers multiple teams with unified billing data
  • Guaranteed SLAs for enterprise customers

Cons

  • Requires technical expertise for self-hosting and integration
  • Focus on usage-based billing might be overkill for simpler business models

Ratings Across the Web

4.7(3 reviews)

Ratings aggregated from independent review platforms. Learn more

Preview

Key Features

Usage metering and real-time event ingestion (up to 1M events/sec)Support for consumption-based billing, prepaid credits, and usage allowancesNo-code UI and API for updating usage chargesHybrid plan creation combining usage-based and subscription modelsCustomizable pricing, usage budgets, and terms with overridesAlerting and visibility for usage data, with threshold billingWallets and credits management for top-ups, trials, and grace periodsDeployment on own infrastructure for data sovereignty and scalability

Pricing Plans

Pricing checked May 29, 2026

Business

Contact us

  • Lago core platform
  • Data pipeline integration
  • Lifetime usage calculation
  • Invoice preview endpoint
  • Business hours support
  • Customer support portal
  • Slack channel with Lago

Enterprise

Contact us

  • Everything in Business
  • 24/7 premium support
  • Assigned solutions engineer
  • Solutions engineer check-ins during implementation
  • Self-hosted deployment option

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Lago FAQ

What types of usage metrics can Lago track and bill for?

Lago can track and bill for a wide range of usage metrics, including credits, tokens, compute hours, API calls, outcomes, and any other custom events defined by the user. It supports charging directly, including allowances, or using metrics for credit consumption.

How does Lago handle high volumes of usage data?

Lago is engineered to handle high volumes of usage data, capable of ingesting up to 1 million events per second. This ensures that billing remains accurate and responsive even during usage spikes, making it suitable for high-volume enterprises.

Can Lago integrate with existing subscription models?

Yes, Lago allows for the creation of hybrid plans, enabling companies to combine usage-based billing with existing subscription models. This provides flexibility in designing comprehensive pricing strategies.

What kind of control does Lago offer over billing data and infrastructure?

Lago is an open-source solution that can be deployed on a company's own infrastructure. This provides full control over scalability, data sovereignty, and compliance, which is particularly beneficial for enterprises and AI companies with strict data requirements.

Which teams within an organization benefit most from using Lago?

Engineering teams benefit from building billing without headaches, product teams can ship complex pricing faster, finance teams gain a single source of truth for all billing motions, and operations teams achieve better data management and efficiency.

Source: getlago.com

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