Langfuse
Langfuse is an open source platform focused on building AI applications with a focus on tracing, evaluation, and prompt management. Now part of ClickHouse, it serves a large customer base including Fortune 50 companies, and emphasizes open source and self-hosting solutions in AI observability and development.
Headquarters
San Francisco, California, United States
Company Size
1-10 employees
Founded
2022
Langfuse is an open-source platform designed for large language model (LLM) engineering, focusing on enhancing the observability and performance of LLM applications. It provides tools for tracing, evaluations, prompt management, and metrics, enabling developers to debug and optimize their applications efficiently. Langfuse integrates seamlessly with popular frameworks like Langchain, OpenAI, LlamaIndex, and LiteLLM, helping teams improve their workflows and applications in the rapidly evolving AI landscape.
Open-source LLM Observability: Langfuse Acquired by ClickHouse, Inc.
1 month ago
Database maker ClickHouse raises $400M, acquires AI observability startup Langfuse
Jan 16, 2026
ClickHouse Raises $400M Series D Led by Dragoneer to Accelerate Expansion Across Analytics and AI Infrastructure
1 month ago
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
View leadership team, funding history,
and employee contacts for Langfuse.
Snowflake, Databricks challenger ClickHouse hits $15B valuation
Jan 16, 2026