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Langfuse icon

Langfuse

Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more.

Create manual annotations to provide feedback, corrections, and improvements to your LLM outputs. Use annotations to build high-quality datasets and set a baseline for automated evals.

Cost / License

  • Freemium (Subscription)
  • Proprietary

Application type

Platforms

  • Online
  • Software as a Service (SaaS)
  • Self-Hosted
  • Docker
Run online/offline evals, via UI (experiment with prompts/models) and via SDKs (experiment with end-to-end application). Build datasets from traces to continuously improve your evals. View results in UI.
Experiment with different prompts, models, and parameters in an interactive playground. Compare outputs, iterate on prompts, and save successful configurations to prompt management.
+3
Version-control prompts collaboratively, deploy/roll-back instantly to different environments, support for templates, variables, and A/B testing. Cached client-side for 0 latency/availability impact.
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Langfuse information

  • Developed by

    DE flaglangfuse

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $29 and $2499 per month + free version with limited functionality.

  • Written in

  • Alternatives

    2 alternatives listed

  • Supported Languages

    • English

AlternativeTo Category

AI Tools & Services

GitHub repository

  •  22,496 Stars
  •  2,246 Forks
  •  557 Open Issues
  •   Updated  

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What is Langfuse?

Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications. All platform features are natively integrated to accelerate the development workflow. Langfuse is open, self-hostable, and extensible.

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