Prometheus
Terraform
| Feature | Prometheus | Terraform |
|---|---|---|
| Pricing | Free only | Free / from $0.00014/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | devops-engineers, sre-teams, kubernetes-users, infrastructure-teams | devops-engineers, cloud-architects, platform-teams, infrastructure-teams |
| Founded | 2012 | 2014 |
| Metrics Collection | ✓ | ✗ |
| Alerting | ✓ | ✗ |
| Promql | ✓ | ✗ |
| Service Discovery | ✓ | ✗ |
| Grafana Integration | ✓ | ✗ |
| Multi Dimensional Data | ✓ | ✗ |
| Infrastructure As Code | ✗ | ✓ |
| Multi Cloud | ✗ | ✓ |
| State Management | ✗ | ✓ |
| Plan And Apply | ✗ | ✓ |
| Modules | ✗ | ✓ |
| Provider Ecosystem | ✗ | ✓ |
| Drift Detection | ✗ | ✓ |
✓ 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
✓ Terraform Pros
- Multi-cloud support with consistent workflow
- Declarative language (HCL) is readable and maintainable
- Massive provider ecosystem (3,000+ providers)
- State management tracks real infrastructure
- Terraform Cloud adds collaboration features
✗ Terraform Cons
- State file management requires careful handling
- BSL license change from open source caused controversy
- Complex modules can be hard to debug
The Verdict
Prometheus is built for devops engineers and sre teams, with a focus on metrics-collection and alerting. Terraform targets devops engineers and cloud architects and leads with infrastructure-as-code and multi-cloud.
Prometheus uses custom enterprise pricing, while Terraform starts at $0.00014/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, Terraform offers broader built-in capabilities (7 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 devops engineers, infrastructure 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.