Opik by Comet vs SigNoz: Which Should You Choose in 2026?
Choosing between Opik by Comet 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.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Opik by Comet
Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.
Best for you if:
- • You need something completely free
- • You need debugging features specifically
- • Open-source platform for LLM application evaluation and monitoring.
- • Automates prompt and agent optimization with multiple powerful optimizers.
SigNoz
Open-source APM and observability
Best for you if:
- • You want the higher-rated option (8.4/10 vs 0.0/10)
- • You need data visualization 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 |  Opik by Comet |  SigNoz |
|---|---|---|
Price | Free | Free + Paid |
Best For | Debugging | Data Visualization |
Rating | —/100 | 84/100 |
| Feature | Opik by Comet | SigNoz |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | — | 84 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | DebuggingMonitoring | Data VisualizationMonitoring |
How Opik by Comet and SigNoz Compare
Opik by Comet
Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.
Free
SigNoz
Open-source APM and observability
Free tier available · 84/100 score
Opik by Comet is a debugging tool. SigNoz is in data visualization.
Who Should Use What?
On a budget?
Opik by Comet is free. SigNoz is freemium.
Go with: Opik by Comet
Want the highest-rated option?
SigNoz scores 84/100. Opik by Comet is unrated.
Go with: SigNoz
Value user reviews?
Neither has user reviews yet.
Go with: SigNoz
3 Questions to Help You Decide
What's your budget?
Opik by Comet is free. SigNoz is freemium. Go with Opik by Comet if free matters most.
What's your use case?
Opik by Comet is a debugging tool. SigNoz is in data visualization. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
SigNoz
- Higher score: 84/100 vs unrated
- Free tier available
- Our pick for this comparison
Opik by Comet
- Completely free
- Better fit for debugging
The Bottom Line
SigNoz (84/100) is our pick. That said, Opik by Comet is free — hard to beat on price.
Frequently Asked Questions
Is Opik by Comet or SigNoz better?
SigNoz scores 84/100 in our evaluation. Opik by Comet is free and SigNoz is freemium.
What are Opik by Comet and SigNoz used for?
Opik by Comet: Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.. SigNoz: Open-source APM and observability.
What does Opik by Comet cost vs SigNoz?
Opik by Comet is completely free. SigNoz is freemium (free tier + paid plans). Visit their websites for detailed pricing.