Directory / Langfuse
Observability & Monitoring

Langfuse

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Open source LLM engineering platform: observability, metrics, evals, prompt management.

Pricing Model Open Source / Cloud
Starting Price $0 (Cloud Free Tier / Pro from $59/mo)
Self-Hosted Available (Docker/Open Source)
Target Audience Open-Source Developers, Privacy-conscious AI teams

Core Features & Capabilities

  • ✓ Open-Source Tracing
  • ✓ Prompt Version Control
  • ✓ Cost & Token Tracking
  • ✓ Self-host via Docker

Pros

  • + 100% open-source & self-hostable
  • + Framework-agnostic (works with LiteLLM, OpenAI, LangChain)

Cons / Limitations

  • - Smaller team than LangSmith

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