Datadog vs Prometheus: Which is Better in 2026?
Choosing between Datadog and Prometheus 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: Datadog wins this matchup. Our overall Monitoring pick is Better Uptime. Our free Monitoring pick is Spiceworks. Pick Prometheus if you need a fully free option.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Datadog
Cloud monitoring, security, and AI investigations for DevOps
Best for you if:
- • You want comprehensive platform
- • You want great visualizations
Prometheus
Monitoring and alerting toolkit
Best for you if:
- • You want a fully free tool (Datadog requires payment)
- • You want industry standard
- • You want great for metrics
| At a Glance | Datadog | Prometheus |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Monitoring | Monitoring |
Rating | 4.4/5 | 4.5/5 |
Free plan | Yes | Yes |
Choose Datadog or Prometheus?
Choose Datadog if
Cloud monitoring, security, and AI investigations for DevOps
- You want comprehensive platform
- You want great visualizations
Choose Prometheus if
Monitoring and alerting toolkit
- You want a fully free tool (Datadog requires payment)
- You want industry standard
- You want great for metrics
| Feature | Datadog | Prometheus |
|---|---|---|
| Pricing Model | Freemium | Free |
| User Rating | ★4.4/5 726 reviews | ★4.5/5 61 reviews |
| Categories | MonitoringLog Management | MonitoringDevOps |
In-Depth Analysis
Datadog
Cloud monitoring, security, and AI investigations for DevOps
Datadog is the most comprehensive observability platform, infrastructure monitoring, APM, logs, RUM, security, and 750+ integrations in one place.
Watch out
APM requires Infrastructure Monitoring on the SAME hosts: you cannot buy APM alone. APM Pro ($35/host) + Infra Pro ($15/host) = $50/host minimum. Most pricing pages only show the APM price
Strengths
- +Comprehensive platform
- +Great visualizations
- +700+ integrations
Weaknesses
- -Complex pricing
- -Can be expensive
Key features
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
Pricing: Datadog vs Prometheus
| Plan | Datadog | Prometheus |
|---|---|---|
| Tier 1 | Free Free | Free Free |
| Tier 2 | $15 /host/month (annual) Infrastructure Pro | N/A |
| Tier 3 | $23 /host/month (annual) Infrastructure Enterprise | N/A |
| Tier 4 | $31 /host/month (annual, with Infra) APM | N/A |
| Tier 5 | $40 /host/month (annual, with Infra) APM Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Datadog pricing and Prometheus pricing.
Who Should Use What?
On a budget?
Prometheus is free. Datadog is freemium.
Go with: Prometheus
Want the highest-rated option?
Datadog: 4.4/5 (726 reviews). Prometheus: 4.5/5 (61 reviews).
Go with: Prometheus
Value user reviews?
Datadog: 726 reviews (4.4/5). Prometheus: 61 reviews (4.5/5).
Go with: Datadog
3 Questions to Help You Decide
What's your budget?
Datadog is freemium. Prometheus is free. Go with Prometheus if free matters most.
What's your use case?
Both are monitoring tools. Compare their specific features to decide.
How important are ratings?
Prometheus is rated higher: 4.5/5 vs 4.4/5.
Key Takeaways
Datadog
- Larger review base (726 reviews)
- Free tier available
- Our pick for this comparison
Prometheus
- Completely free
- Higher user rating: 4.5/5 vs 4.4/5
The Bottom Line
Datadog wins this matchup. Our overall Monitoring pick is Better Uptime. Our free Monitoring pick is Spiceworks. That said, Prometheus is free, hard to beat on price.
Frequently Asked Questions
Is Datadog or Prometheus better?
Datadog is rated in our evaluation. Datadog is freemium and Prometheus is free.
What are Datadog and Prometheus used for?
Datadog: Cloud monitoring, security, and AI investigations for DevOps. Prometheus: Monitoring and alerting toolkit.
What does Datadog cost vs Prometheus?
Datadog is freemium (free tier + paid plans). Prometheus is completely free. Visit their websites for detailed pricing.