Grafana Alloy 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?
FeatureGrafana AlloyPrometheus
CategoryMonitoring & StatusMonitoring & Status
LicenseApache-2.0Apache-2.0
LanguageGoGo
Setup difficultyMediumMedium
Min. RAM128 MB512 MB
Deploymentdocker, kubernetes, binarydocker, binary, helm
GitHub stars★ 3,417★ 65,616
First released20242015
ReplacesDatadog AgentDatadog

Why pick each one

Choose Grafana Alloy if…

  • One agent for all signals
  • Strong Grafana integration
Grafana Alloy details

Choose Prometheus if…

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

Frequently asked questions

Is Grafana Alloy 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 Grafana Alloy and Prometheus free and open-source?

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

Can I run Grafana Alloy and Prometheus with Docker?

Grafana Alloy: yes. Prometheus: yes.

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