Prometheus vs SigNoz: Which is Better in 2026?
Choosing between Prometheus and SigNoz comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Prometheus wins this matchup. Our overall Monitoring pick is Better Uptime. Our free Monitoring pick is Datadog MCP Server. Pick SigNoz if you need DevOps.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Prometheus
Monitoring and alerting toolkit
Best for you if:
- • You need something completely free
- • You need monitoring features specifically
- • Prometheus is an open-source monitoring system with a time-series database
- • It collects metrics, provides alerting, and powers Grafana dashboards
SigNoz
Open-source APM and observability
Best for you if:
- • You need DevOps features specifically
- • SigNoz is an open-source observability platform for metrics and traces
- • It provides APM, logs, and distributed tracing in one tool
| At a Glance |  Prometheus |  SigNoz |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Monitoring | DevOps |
Rating | 4.4/5 | - |
Free plan | Yes | Yes |
Choose Prometheus or SigNoz?
Choose Prometheus if
Monitoring and alerting toolkit
- Industry standard
- Great for metrics
- Open source
- You want a fully free tool (SigNoz requires payment)
- Your work is monitoring-shaped, not DevOps-shaped
Choose SigNoz if
Open-source APM and observability
- Open source observability
- All-in-one
- Self-hostable
- Your work is DevOps-shaped, not monitoring-shaped
| Feature | Prometheus | SigNoz |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | ★4.4/5 71 reviews | No ratings yet |
| Categories | MonitoringDevOps | DevOpsMonitoring |
In-Depth Analysis
Prometheus
Monitoring and alerting toolkit
Prometheus is 100% free and open source (Apache 2.0).
Watch out
Storage costs grow linearly with metric cardinality and retention period
Strengths
- +Industry standard
- +Great for metrics
- +Open source
Weaknesses
- -Long-term storage
- -Learning curve
Key features
SigNoz
Open-source APM and observability
SigNoz offers a very generous pricing model with its free Community tier, providing full features and unlimited data for self-hosted users.
Strengths
- +Open source observability
- +All-in-one
- +Self-hostable
- +OpenTelemetry native
- +Fair cloud pricing
Weaknesses
- -Newer platform
- -Self-hosting complex
- -Smaller community
- -Documentation improving
- -Less features than Datadog
Key features
Pricing: Prometheus vs SigNoz
| Plan | Prometheus | SigNoz |
|---|---|---|
| Tier 1 | Free Free | Free Community |
| Tier 2 | N/A | $199 month Teams |
Pricing verified from each vendor's public pricing page. Compare in detail on Prometheus pricing and SigNoz pricing.
Who Should Use What?
On a budget?
Prometheus is free. SigNoz is freemium.
Go with: Prometheus
Want the highest-rated option?
Prometheus is rated 4.4/5. SigNoz has no ratings yet.
Go with: Prometheus
Value user reviews?
Prometheus: 71 reviews (4.4/5). SigNoz: no ratings yet.
Go with: Prometheus
3 Questions to Help You Decide
What's your budget?
Prometheus is free. SigNoz is freemium. Go with Prometheus if free matters most.
What's your use case?
Prometheus is a monitoring tool. SigNoz is in DevOps. Pick the category that matches your needs.
How important are ratings?
Prometheus is rated 4.4/5; SigNoz has no ratings yet.
Key Takeaways
Prometheus
- Completely free
- Our pick for this comparison
SigNoz
- Better fit for DevOps
The Bottom Line
Prometheus wins this matchup. Our overall Monitoring pick is Better Uptime. Our free Monitoring pick is Datadog MCP Server.
Frequently Asked Questions
Is Prometheus or SigNoz better?
Prometheus is rated in our evaluation. Prometheus is free and SigNoz is freemium.
What are Prometheus and SigNoz used for?
Prometheus: Monitoring and alerting toolkit. SigNoz: Open-source APM and observability.
What does Prometheus cost vs SigNoz?
Prometheus is completely free. SigNoz is freemium (free tier + paid plans). Visit their websites for detailed pricing.