Langfuse

Open-source observability and analytics platform for LLM applications with tracing and monitoring.

Development ToolsFreemium
4.8 (2134 reviews)
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Key Features

  • Tracing
  • Analytics
  • Prompt management
  • User feedback
  • Cost tracking
  • Evaluation

Pros

  • Excellent observability
  • Open source option
  • Good integrations
  • Detailed analytics
  • Self-hostable
  • Active development

Cons

  • Setup complexity
  • Limited free tier
  • Learning curve
  • Resource usage
  • Documentation gaps
  • Feature limitations

Use Cases

Best For:

Production monitoringDebugging LLMsCost optimizationPerformance trackingTeam collaboration

Not Recommended For:

Simple projectsIndividual developersMinimal logging needsQuick prototypes

Recent Reviews

John Developer
2 weeks ago

Excellent tool that has transformed our workflow. The API is well-documented and easy to integrate.

Sarah Tech
1 month ago

Great features but took some time to learn. Once you get the hang of it, it's incredibly powerful.

Mike Business
2 months ago

Best investment for our team. Increased productivity by 40% in just the first month.