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Company

Langfuse

Langfuse is an open-source AI engineering platform for LLM and agent observability, evaluations, prompt management, tracing, and production-quality monitoring. ClickHouse acquired Langfuse in January 2026.

GILD research

8piecesOn Langfuse: 1 review, 3 comparisons, 2 research reports, and 2 buyer guides. Read the research

Product
Langfuse
Official site
langfuse.com

Products

We cover 1 Langfuse product. Each opens on its own hub.

  1. Langfuse+46 PositiveOpen-source tracing, evaluation, and prompt management for LLM apps and agents.AI Observability

Research

We have written 8 pieces on Langfuse and its products: 1 review, 3 comparisons, 2 research reports, and 2 buyer guides.

Reviews 1

  1. Langfuse Review: Open-Source Tracing, Evals, and Prompt ManagementChoose Langfuse as the open-source default for LLM tracing if someone will own ClickHouse or the unit bill, and plan for the v4 cutover.Langfuse, 3 min readRead the review

Comparisons 3

  1. LangSmith vs Langfuse: Managed Platform or Open-Source Core?Langfuse, 9 min read
  2. Langfuse vs Arize AX: Open-Source Core or Model Observability Platform?Langfuse, 8 min read
  3. Langfuse vs Braintrust: Open-Source Platform or Eval-First SaaS?Langfuse, 6 min read

Research 2

  1. Running Langfuse: What Engineering Teams Report4 min read
  2. The Economics of LLM Observability4 min read

Buyer guides 2

  1. Langfuse Tracing & Evaluation PlaybookLangfuse, 3 min read
  2. Self-Hosting Langfuse: Sizing, Licensing & the v4 UpgradeLangfuse, 3 min read