OpenMeter

OpenMeter is a developer-focused platform that helps companies implement usage-based billing. At its core, it takes events from your application—like API calls, AI token usage, or compute time—and turns them into accurate, real-time usage data you can bill for. Instead of building a complex metering system from scratch, you send your usage events to OpenMeter, which handles the aggregation, reporting, and enforcement of usage limits. It's designed to be the plumbing layer between your product's activity and your billing system.

What makes OpenMeter stand out is its focus on real-time data and developer experience. It can process millions of events per second with low latency, which is critical for enforcing usage limits before a customer exceeds them. It comes with SDKs for popular languages like TypeScript, Python, and Go, and has pre-built collectors for tools like Kubernetes, OpenTelemetry, and LangChain. This means you can start metering infrastructure or AI costs without writing custom pipelines. The platform also includes a flexible product catalog, letting you change pricing plans or create custom deals without needing to rewrite code.

This tool is a clear fit for SaaS companies, especially in AI and API sectors, that charge based on consumption. Engineering teams use it to avoid building internal metering systems, product teams use it to launch new pricing models faster, and sales teams can use the integrated CRM insights to spot expansion opportunities. If your business model depends on accurately tracking and charging for how much customers use your service, OpenMeter aims to handle the heavy technical lifting.