Langfuse
Open Source LLM Engineering Platform
Puddl
Get Complete Breakdown of OpenAI API Usage for Free
Updated February 2026
| Langfuse | Puddl | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 41 | 3 |
| Pros | 18 | 0 |
| FactScore™ | 81.2 | 30.1 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Langfuse — Pros
LLM observability Open source Detailed tracing Monitoring capabilities Cost-effective Easy to integrate Free tier SDK availability Seamless integration Debugging tools Fast iterations Insightful analytics Community engagement Detailed analytics Excellent UI Flexible architecture Open API Robust telemetryBoth tools — Pros
—Only in Puddl — Pros
No unique pros listedOnly in Langfuse — Cons
—Both tools — Cons
—Only in Puddl — Cons
—Details
| Langfuse | Puddl | |
|---|---|---|
| Categories | AI Infrastructure Tools, AI Metrics and Evaluation | AI Infrastructure Tools, AI Metrics and Evaluation |
| Platforms | Web | Web |
| Became Popular | August 20, 2023 | May 20, 2023 |
| Website | langfuse.com | puddl.io |
Who Should Pick Which?
Choose Langfuse if...
- LLM observability
- Open source
- Detailed tracing
Choose Puddl if...
- No unique pros listed
With a FactScore™ of 81.2 vs 30.1, Langfuse leads in community reception. Langfuse uniquely offers LLM observability and Open source, while Puddl stands out for No unique pros listed.
What Users Say
Langfuse
Without Langfuse, we would have been flying blind with our drafting agent. This platform is critical not just for measuring performance, but for understanding exactly what context gets pulled into ...
So excited to see Langfuse go live — we've been a happy user for 4 weeks now. Most detailed latency and analytics in the market. Highly recommend for anyone using complex chains or with user-f...
We’ve been unsung Langfuse for 2 months now. It’s easy to integrate and makes it simpler for us to monitor & debug LLM requests during development and beyond.
Puddl
Hey! Congrats on the launch! I love the traffic and cost analytics breakdown! it also gives a good insight about the tokens for requests used which is kind of an abstract consumption model by opena...
Sankeerth, congratulations on the launch!🎊 Really interesting tool for analytics - are you the first one on the market who created this or similar solutions already also take place? And are you pl...
🎈 Pop the champagne! Your Puddl launch on Product Hunt is a reason to celebrate. Kudos to your team for bringing something extraordinary to the table. Here's to the next chapter of your journey, f...
Frequently Asked Questions
Which is better, Langfuse or Puddl?
Based on FactScore™, Langfuse leads with a score of 81.2 vs 30.1. Langfuse has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Langfuse compared to Puddl?
Langfuse uniquely offers: LLM observability, Open source, Detailed tracing, Monitoring capabilities, Cost-effective.
What are the pros of Puddl compared to Langfuse?
Puddl uniquely offers: No unique pros listed.
Is Langfuse better rated than Puddl?
Langfuse is rated 5.0★ from 41 reviews. Puddl is rated 5.0★ from 3 reviews.
What is the FactScore™ of Langfuse and Puddl?
FactScore™ weighs rating and review volume together. Langfuse scores 81.2 and Puddl scores 30.1.
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