OpenTelemetry Collector vs Prometheus

A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureOpenTelemetry CollectorPrometheus
CategoryMonitoring & StatusMonitoring & Status
LicenseApache-2.0Apache-2.0
LanguageGoGo
Setup difficultyMediumMedium
Min. RAM128 MB512 MB
Deploymentdocker, kubernetes, binarydocker, binary, helm
GitHub stars★ 7,359★ 65,616
First released20202015
ReplacesDatadog AgentDatadog

Why pick each one

Choose OpenTelemetry Collector if…

  • Industry-standard telemetry hub
  • Highly extensible
OpenTelemetry Collector details

Choose Prometheus if…

  • Powerful query language
  • Reliable and scalable
  • Huge ecosystem
Prometheus details

Frequently asked questions

Is OpenTelemetry Collector or Prometheus better?

Neither is universally better. Prometheus has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are OpenTelemetry Collector and Prometheus free and open-source?

Yes. OpenTelemetry Collector is licensed under Apache-2.0 and Prometheus under Apache-2.0. Both can be self-hosted at no software cost.

Can I run OpenTelemetry Collector and Prometheus with Docker?

OpenTelemetry Collector: yes. Prometheus: yes.

Related comparisons