OpenTelemetry vs Prometheus: Which Should You Choose in 2026?
Choosing between OpenTelemetry 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
OpenTelemetry
Observability framework for cloud-native software
Best for you if:
- • You want the higher-rated option (9.0/10 vs 8.8/10)
- • You need api tools features specifically
- • OpenTelemetry is an open-source observability framework for traces and metrics
- • It standardizes instrumentation across languages for monitoring tools
Prometheus
Monitoring and alerting toolkit
Best for you if:
- • 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
| At a Glance |  Prometheus | |
|---|---|---|
Price | Free | Free |
Best For | API Tools | Monitoring |
Rating | 90/100 | 88/100 |
| Feature | OpenTelemetry | Prometheus |
|---|---|---|
| Pricing Model | Free | Free |
| Editorial Score | 90 | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | API ToolsDebugging | MonitoringLog Management |
Understanding the Differences
Both OpenTelemetry and Prometheus solve similar problems, but they approach them differently.OpenTelemetry positions itself as "observability framework for cloud-native software" while Prometheusfocuses on "monitoring and alerting toolkit". These differences matter depending on what you're trying to accomplish.
When to Choose OpenTelemetry
OpenTelemetry makes sense if you're looking for a completely free solution. With a score of 90/100, it's our top pick in this comparison.
When to Choose Prometheus
Prometheus is worth considering if you need a free tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, OpenTelemetry lets you get started without pulling out your credit card.
We'd pick: OpenTelemetry
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. OpenTelemetry handles scale better in our testing.
We'd pick: OpenTelemetry
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: OpenTelemetry
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? OpenTelemetry is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated OpenTelemetry higher (90/100). But the community has upvoted Prometheus more (0 votes). Pick your source of truth.
Key Takeaways
What OpenTelemetry Does Better
- Higher overall score (90/100)
- Our recommendation for most use cases
Consider Prometheus If
- You need a completely free solution
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with OpenTelemetry (90/100). But the honest answer is that "better" depends on your situation. OpenTelemetry scores higher in our analysis, but Prometheus might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is OpenTelemetry or Prometheus better?
Based on our analysis, OpenTelemetry scores higher with 90/100. OpenTelemetry isfree while Prometheus is free. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from OpenTelemetry to Prometheus easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do OpenTelemetry and Prometheus offer free trials?
Most software in this category offers free trials or free tiers. OpenTelemetry is completely free.Prometheus is completely free. Visit their websites for current trial offers.