Langfuse

Through groundbreaking technology, we are revolutionizing LLM engineering at Langfuse. As an open-source platform, we empower teams to collaboratively develop, monitor, evaluate, and debug AI applications with unprecedented precision. Our comprehensive suite of tools includes observability, prompt management, and advanced analytics, enabling developers to trace complex execution flows and optimize model performance. By providing deep insights into cost, latency, and quality, we help organizations build production-grade AI systems that are both reliable and scalable.

Founded in 2022 and headquartered in Berlin, Germany, Langfuse has rapidly become a critical component of the modern AI stack. Our platform integrates seamlessly with leading frameworks such as LangChain, LlamaIndex, and OpenAI, offering a flexible and robust solution for diverse engineering needs. In a significant milestone for our growth and technological advancement, Langfuse was acquired by ClickHouse in January 2026. This strategic union combines our expertise in LLM observability with ClickHouse's powerful data analytics capabilities, allowing us to deliver even faster and more scalable solutions to our global community of developers.