--- source_url: "https://getlago.com/platform/usage-metering" title: "Usage Metering Software | Real-Time API & Event Billing | Lago" mirrored_at: 2026-08-28T01:01:42.621Z host: getlago.com cited_in_42a: true mirror_canonical: "https://index.42a.ai/getlago.com/platform/usage-metering" --- > **Original source:** https://getlago.com/platform/usage-metering Usage Metering ## Meter usage in real time. Bill it without the headaches. Lago is the open-source billing platform that gives engineering and finance full control over any usage-based model. Event-driven metering, hybrid pricing, self-hosted or cloud. ![Mistral AI](https://getlago.com/customers/mistral-ai.svg) ![Gladia](https://getlago.com/customers/gladia.svg) ![Cerebrium](https://getlago.com/customers/cerebrium.svg) ![PayPal](https://getlago.com/customers/paypal.svg) ![Moov](https://getlago.com/customers/moov.svg) ![Blacksmith](https://getlago.com/customers/blacksmith.svg) ![Groq](https://getlago.com/customers/groq.svg) ![Porter](https://getlago.com/customers/porter.svg) ![Lune](https://getlago.com/customers/lune.svg) ![Synthesia](https://getlago.com/customers/synthesia.svg) ![Unifonic](https://getlago.com/customers/unifonic.svg) ![Flipside](https://getlago.com/customers/flipside.svg) ![Laravel](https://getlago.com/customers/laravel.svg) ![HMS](https://getlago.com/customers/hms.svg) ![OVHcloud](https://getlago.com/customers/ovh-customer.svg) ![Swan](https://getlago.com/customers/swan.svg) ![Dfns](https://getlago.com/customers/dfns.svg) ![LCL](https://getlago.com/customers/lcl-customer.svg) ![Epicor](https://getlago.com/customers/epicor.svg) ![Silverfin](https://getlago.com/customers/silverfin.svg) ![1NCE](https://getlago.com/customers/1nce.svg) ![Arcee AI](https://getlago.com/customers/arcee-ai.svg) #### Built for next-gen companies 1M events/sec Lago matches your event volume 99.9% historical uptime Guaranteed SLAs for enterprise customers $829M of invoices issued monthly\* Battle-tested platform, built for accuracy \*based on total requests to Lago API in October 2025 * * * ###### Turn raw usage data into accurate invoices Lago ingests raw usage data and converts it into charges. Aggregate events in real time to ensure your billing doesn’t miss a beat. ![Turn raw usage data into accurate invoices](https://getlago.com/_next/image?url=%2Fproduct%2Flandscape_leverage_usage_data_2x.webp&w=2048&q=75) * * * ###### Bill usage at any scale Bill as many products as you want and ingest up to 1M events per second. ![Bill usage at any scale](https://getlago.com/_next/image?url=%2Fproduct%2Flandscape_define_metrics_2x.webp&w=2048&q=75) * * * ###### Adapt pricing on the fly Both non-engineers and engineers can update usage charges via API or Lago’s no-code UI. ![Adapt pricing on the fly](https://getlago.com/_next/image?url=%2Fproduct%2Flandscape_open_source_code_2x.webp&w=2048&q=75) * * * ###### Bill for usage your way Lago supports consumption-based billing, prepaid credits, usage allowances and any other usage-based model. ![Bill for usage your way](https://getlago.com/_next/image?url=%2Fproduct%2Fmixed-pricing.png&w=2048&q=75) ### Usage-based billing is easy now Everything you need to bill for usage. ![Define billable metrics.](https://getlago.com/_next/image?url=%2Fproduct%2Fportrait_billable_metrics_filter_2x.webp&w=2048&q=75) Define billable metrics. Define metrics you’ll charge for. Charge for them directly, include an allowance or use them for credit consumption. ![Ingest usage.](https://getlago.com/_next/image?url=%2Fproduct%2Fportrait_event_ingestion_2x.webp&w=2048&q=75) Ingest usage. Charge for credits, tokens, compute hours, API calls, outcomes or anything else. ![Create hybrid plans.](https://getlago.com/_next/image?url=%2Fproduct%2Fportrait_plan_types_2x.webp&w=2048&q=75) Create hybrid plans. Combine usage-based with subscription models. ![Customize with overrides.](https://getlago.com/_next/image?url=%2Fproduct%2Fportrait_override_2x.webp&w=2048&q=75) Customize with overrides. Customize terms like pricing, usage budgets and more for enterprise customers. ### Resources Billing is mission-critical. Lago is engineered for the realities of high-volume enterprises. ## Empower all teams with usage data ![Engineers](https://getlago.com/solutions/teams/engineers.svg) ### Engineering Build billing without the headaches. ![Product](https://getlago.com/solutions/teams/product.svg) ### Product Ship complex pricing and new packaging faster. ![Finance](https://getlago.com/solutions/teams/finance.svg) ### Finance Billing for all motions, products and geographies. ![Operations](https://getlago.com/solutions/teams/operations.svg) ### Operations One source of truth for all billing data. ## Built for companies with sophisticated needs ![Enterprise customer story](https://getlago.com/_next/image?url=%2Fcustomers%2Fquotes%2Fmistral.webp&w=2048&q=75) ![Enterprise logo](https://getlago.com/customers/mistral-ai.svg) ![Quote](https://getlago.com/quote.svg) Lago has been able to follow the pace of our releases and has allowed us to focus on what we do best. — Timothée Lacroix, CTO, Mistral AI ### Usage Metering FAQ ###### What is usage metering? Toggle Usage metering captures product consumption, an API call, a token, a compute-minute, as an event, then aggregates those events into a number billing can charge for. In Lago, every event carries a code that maps to a billable metric, a transaction\_id for deduplication, and a subscription reference, and events arrive through the REST API, batch API, streaming connectors, or an S3 backfill. ###### How does Lago calculate usage-based charges? Toggle ###### What aggregation types does Lago support? Toggle ###### How much usage volume can Lago's metering engine handle? Toggle ###### How does Lago handle late or backdated usage events? Toggle ###### What happens if a usage event is sent twice? Toggle ###### Can usage-based billing be combined with subscriptions? Toggle ###### Is usage metering available self-hosted or only in Lago Cloud? Toggle ###### How is usage metering different from usage-based billing? Toggle ###### What's the fastest way to get started with usage metering in Lago? Toggle