Introduction

#What is OpenMeter?

OpenMeter is an open source metering service that helps engineers to monetize consumption data.

Under the hood OpenMeter uses stream processing and combines the power of Go, Kafka and ClickHouse to provide scalable data ingestion and rapid usage aggregations.

Whether you're an individual developer or part of a larger team, OpenMeter can help you meter and monetize large volume of consumption data.

#Usage metering is harder than it seems

Building a real-time, scalable metering that can provide instant aggregates and deduplication accurately creates engineering challenges around:

Accuracy: Metrics systems may not provide the needed accuracy due to sampling.
Cost: Database writes at scale can be expensive.
Latency: Periodic batch processing in data warehouses can introduce latency.

Read more about how does OpenMeter compares to databases and metrics systems in our metering challenges deep dive.

#Main Features

Feature	Description	Cloud	Open-Source
Cloud Metering	Scalable and reliable event-based metering to track consumption per token, second, or API call granularity.	Yes	Yes
Usage-Based Billing	Integrations with billing providers like Stripe. Synchronize aggregated usage accurately to your billing system.	Integration	Query API
Customer Dashboards	Build real-time customer dashboards backed by OpenMeter. Our web SDK offers React components and hooks.	Yes	Yes
Usage Syncs & Reports	Synchronize usage to external systems like CRM reliably.	Yes	Soon
Usage Limits Enforcement	Low latency usage and rate limits enforcement to protect your margins.	Integration	Query API
Cost Attribution	Attribute shared costs to customers, teams, and product features with our unit cost capabilities.	Yes	No