Datadog
Prometheus
| Feature | Datadog | Prometheus |
|---|---|---|
| Pricing | Free / from $15/mo | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | devops-teams, sre-teams, cloud-native-companies, enterprises | devops-engineers, sre-teams, kubernetes-users, infrastructure-teams |
| Founded | 2010 | 2012 |
| Infrastructure Monitoring | ✓ | ✗ |
| Apm | ✓ | ✗ |
| Log Management | ✓ | ✗ |
| Synthetics | ✓ | ✗ |
| Real User Monitoring | ✓ | ✗ |
| Security Monitoring | ✓ | ✗ |
| Dashboards | ✓ | ✗ |
| Alerting | ✓ | ✓ |
| Metrics Collection | ✗ | ✓ |
| Promql | ✗ | ✓ |
| Service Discovery | ✗ | ✓ |
| Grafana Integration | ✗ | ✓ |
| Multi Dimensional Data | ✗ | ✓ |
✓ Datadog Pros
- Unified platform for metrics, traces, logs, and security
- 750+ integrations with cloud services and tools
- Powerful dashboards and alerting system
- AI-powered anomaly detection
✗ Datadog Cons
- Per-host pricing becomes expensive at scale
- Complex pricing with many add-ons
- Data ingestion costs can be unpredictable
✓ Prometheus Pros
- Free and open-source
- Powerful query language
- Great Kubernetes integration
- Active community
✗ Prometheus Cons
- No built-in long-term storage
- Complex setup
- Steep learning curve
The Verdict
Datadog is built for devops teams and sre teams, with a focus on infrastructure-monitoring and apm. Prometheus targets devops engineers and sre teams and leads with metrics-collection and alerting.
Prometheus uses custom enterprise pricing, while Datadog starts at $15/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Datadog offers broader built-in capabilities (8 features vs 6), while Prometheus takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for sre teams — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.