Langfuse
AcquiredOpen source LLM engineering platform
About
Traces, evals, prompt management and metrics to debug and improve your LLM application. Onboard via https://langfuse.com Langfuse helps you build and improve LLM applications across the entire lifecycle: - Develop: Observability, Langfuse UI & Prompt Management - Monitor: Traces, Analytics, Metrics & Evaluations - Test: Experiments, Releases & Datasets We are hiring: https://langfuse.com/careers Langfuse was acquired by Clickhouse in January of 2026.
Founders
Marc Klingen· Co-Founder & CEOMarc has diverse experience across Product, Sales, Business Intelligence and full-stack engineering at companies from large (Google, DHL) to early stage startups. He graduated within the top 1% of his Masters in Management and Computer Science from Technical University Munich. Besides that, he loves to hack on personal project and connect with other builders (something he does not get to too much right now).
Maximilian Deichmann· FounderMax built trading systems at European 5bn Fintech, Trade Republic. He knows the ins and outs of building reliable, scalable systems to handle our customers’ most critical business processes. While Max started out studying Management in undergrad, he quickly found his love for computer science and transitioned into engineer self-taught and with a graduate degree.
Clemens Rawert· FounderBefore starting Langfuse, Clemens worked with the founder-CEOs of German Fintech Unicorn Scalable Capital including a unicorn fundraising, an acquisition and helped scale the org and team from 100 - 400 employees. On another note, he studied Economic History, dropped out of a PhD at Oxford, and was a competitive wine taster.
Product launches · 2 launches
Langfuse helps teams collaboratively monitor, evaluate and debug their LLM applications.
Track quality, cost and latency of your LLM apps