Langfuse
Open-source LLM observability and tracing
Berlin, Germany
Founded 2023
Langfuse is an open-source observability platform for LLM applications. It allows users to debug, analyze, and improve their language model applications with traces, spans and metrics. Langfuse serves enterprises and is built on agents, evals, and tracing technologies.
Websites:
Last Updated: April 9, 2026
Current Valuation
No valuation data available
Funding Summary
$4M
Total reported funding
OSS News & Views
May 30, 2026
Oracle Blog: Observability for Multi Agent Systems | ai-data-science
OSS News & Views
May 28, 2026
DEV Community: I scanned Langfuse. It observes its own LLM calls through its own platform. - DEV Community
Media Mention
May 25, 2026
PyImageSearch: Manual Tracing, Scores, and Evaluation with Langfuse (Self-Hosted) - PyImageSearch
Media Mention
May 24, 2026
MarkTechPost: Build a Complete Langfuse Observability and Evaluation Pipeline for Tracing, Prompt Management, Scoring, and Experiments - MarkTechPost
Media Mention
May 18, 2026
PyImageSearch: LLM Observability with Self-Hosted Langfuse and vLLM
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Key People
Core OSS Projects
Business Information
Category
LLMOpsTechnologies
LLMsObservabilityevalsTraces
Sectors
Enterprise
Licenses
MIT-Expat
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