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Tracing evals and prompt management

Free (OSS) / CloudObservabilityLast verified: 2025-01-13

Overview

Langfuse is an open-source LLM observability platform. It provides tracing, evaluation, and prompt management in a clean interface. You can self-host for free or use their cloud offering. It integrates with all major frameworks and LLM providers.

Works with

PythonJSLangChainLlamaIndexAny LLM

Pricing

MOST POPULAR
FreeOpen Source
  • Self-hosted
  • Full features
  • Community support
Free tier / PaidCloud
  • Managed hosting
  • Team features
  • Support

Pros

  • +Open source
  • +Clean UI
  • +Good integrations
  • +Active development

Cons

  • -Newer than alternatives
  • -Self-hosting requires setup

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