Hal9
Launch Your AI-Powered Product in 30 Days
Langfuse
Open Source LLM Engineering Platform
Updated February 2026
| Hal9 | Langfuse | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 1 | 41 |
| Pros | 0 | 18 |
| FactScore™ | 15.1 | 81.2 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Hal9 — Pros
No unique pros listedBoth tools — Pros
—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 telemetryOnly in Hal9 — Cons
—Both tools — Cons
—Only in Langfuse — Cons
—Details
| Hal9 | Langfuse | |
|---|---|---|
| Categories | AI Infrastructure Tools, AI Agent Automation, AI Engineer | AI Infrastructure Tools, AI Metrics and Evaluation |
| Platforms | Web | Web |
| Became Popular | November 14, 2021 | August 20, 2023 |
| Website | hal9.com | langfuse.com |
Who Should Pick Which?
Choose Hal9 if...
- No unique pros listed
Choose Langfuse if...
- LLM observability
- Open source
- Detailed tracing
With a FactScore™ of 15.1 vs 81.2, Langfuse leads in community reception. Hal9 uniquely offers No unique pros listed, while Langfuse stands out for LLM observability and Open source.
What Users Say
Hal9
Big shoutout to the Hal9 team for launching Hal9 Reply! I’m Javier from Hal9, and I’m pumped to share that we built the backend RAG API powering this beast—combining retrieval-augmented generation ...
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.
Related Comparisons
Frequently Asked Questions
Which is better, Hal9 or Langfuse?
Based on FactScore™, Langfuse leads with a score of 81.2 vs 15.1. Langfuse has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Hal9 compared to Langfuse?
Hal9 uniquely offers: No unique pros listed.
What are the pros of Langfuse compared to Hal9?
Langfuse uniquely offers: LLM observability, Open source, Detailed tracing, Monitoring capabilities, Cost-effective.
Is Hal9 better rated than Langfuse?
Hal9 is rated 5.0★ from 1 reviews. Langfuse is rated 5.0★ from 41 reviews.
What is the FactScore™ of Hal9 and Langfuse?
FactScore™ weighs rating and review volume together. Hal9 scores 15.1 and Langfuse scores 81.2.
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