# openmeterio/openmeter

Metering and Billing for AI, API and DevOps. Collect and aggregate millions of usage events in real-time and enable usage-based billing.

Repository: https://github.com/openmeterio/openmeter
Canonical: https://ross.abutalabs.com/products/openmeter
Homepage: https://openmeter.io
Language: Go
License: Apache-2.0
License Family: permissive
Topics: kafka, metering, usage-based-billing, golang, usage, finops, billing, clickhouse, stripe, usage-based-pricing, pricing, cost, analytics, fintech, payment
Last push: 2026-08-26T14:50:59+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 96, longevity 84
- inputs: {"age_days": 1184, "days_push": 7, "days_rel": 29, "gap_med": 3.5, "n_releases_24m": 57}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2231, forks 208 (observed 2026-08-28T04:06:29.102214+00:00)

## What it is
OpenMeter is an open-source metering and billing platform for AI, API, and DevOps products that ingests high-volume usage events, aggregates them in real time, and turns them into usage-based billing, entitlements, and invoices. It exposes a REST API with SDKs, integrates with Stripe and tax providers, and can be self-hosted on Kubernetes or used as a cloud service.

## Use cases
- bill customers based on API request usage
- meter AI token usage and charge per token
- enforce usage limits and quotas for free tiers
- track Kubernetes pod CPU and memory usage for customer billing
- sync usage data to Stripe invoices
- implement prepaid credits and entitlements
- build real-time customer usage dashboards
- support tiered and per-unit pricing models

## When to choose
- you offer usage-based or hybrid pricing and need a single source of truth for consumption
- you need real-time metering at high event volume with entitlement enforcement
- you want billing infrastructure that integrates with your existing payment and tax providers
- you need self-hostable monetization infrastructure with an API-first design

## When to avoid
- you only need fixed recurring subscriptions without usage metering
- you want a bundled operator UI, payment processor, or full accounting system
- you need a fully stable product with no breaking changes, since releases are beta

## Facets
- artifact type: service
- maturity: active
- function: analytics, streaming, etl, api-framework, self-hosted
- domain: fintech, analytics, developer-tools, apis, big-data
- platform: go, self-hosted, cloud, cross-platform
- tags: billing, metering, usage-based-pricing, usage-based-billing, entitlements, stripe, clickhouse, kafka, finops, cloudevents, invoicing, subscriptions, docker, kubernetes

## Member repositories
- openmeterio/openmeter (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:29.102214+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:44:30.503766+00:00, confidence not recorded.
  - readme: https://github.com/openmeterio/openmeter (fetched 2026-08-28T04:06:29.102214+00:00, sha ba988f3ac53d)
  - homepage: https://openmeter.io (fetched 2026-08-29T10:25:17.043500+00:00, sha da153190dd7e)
  - site_page: https://openmeter.io/docs/metering/quickstart (fetched 2026-08-29T10:25:17.052903+00:00, sha 3010d68bf801)
  - site_page: https://openmeter.io/docs/api (fetched 2026-08-29T10:25:17.054694+00:00, sha 3e52ef2f70b6)
  - site_page: https://openmeter.io/docs (fetched 2026-08-29T10:25:17.056414+00:00, sha d0a4608f26eb)
  - site_page: https://openmeter.io/docs/collectors (fetched 2026-08-29T10:25:17.057909+00:00, sha ba026f2bd815)
  - site_page: https://openmeter.io/docs/collectors/kubernetes (fetched 2026-08-29T10:25:17.060983+00:00, sha 93f60cd0a96d)
  - site_page: https://openmeter.io/docs/collectors/s3 (fetched 2026-08-29T10:25:17.062729+00:00, sha bc8dd29d7ee0)
  - site_page: https://openmeter.io/docs/collectors/otel (fetched 2026-08-29T10:25:17.064412+00:00, sha bc9f23e0959f)
  - site_page: https://openmeter.io/pricing (fetched 2026-08-29T10:25:17.059449+00:00, sha c2ad435a0afe)
- Data as of 2026-08-30T08:39:29.467469+00:00.