Grafana OnCall vs Prometheus
| Tagline | Open-source on-call scheduling and incident alerting for engineering teams | Industry-standard metrics monitoring and alerting toolkit with PromQL |
| Category | Monitoring & Status Pages | Monitoring & Status Pages |
| Replaces | Datadog, Pingdom | Datadog |
| GitHub stars | 4k | 65k |
| Language | Python | Go |
| License | AGPL-3.0 | Apache-2.0 |
| Self-host difficulty | 3/5 Moderate | 4/5 Involved |
| Deploy options | Docker Compose Kubernetes | Docker Docker Compose Kubernetes Manual |
| Managed hosting | ||
| Last updated | 1 month ago | 5 days ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Grafana OnCall
- Requires Grafana instance for alerts; not standalone
- Mobile app push notifications require Grafana Cloud relay
- Less mature than PagerDuty for complex multi-team routing
Prometheus
- No built-in dashboards UI; you must pair it with Grafana
- Long-term storage and horizontal scale need add-ons (Thanos, Cortex, Mimir)
- No logs, traces, or APM out of the box (metrics only)
- Steeper operational learning curve than turnkey Datadog
Bottom line
Choose Grafana OnCall if you want the lower-effort setup; choose Prometheus for the larger community and ecosystem. Prometheus has seen more recent development. Open each guide below for deploy steps and the full feature gap.
Grafana OnCall
Open-source on-call scheduling and incident alerting for engineering teams