Langfuse is a comprehensive, open-source platform designed for managing and optimizing large language models (LLMs) through a variety of tools and features tailored for LLM engineering. It is built to provide developers and engineers with enhanced capabilities in observability, metrics, evaluations, prompt management, and a playground for experimentation. Langfuse’s open architecture ensures it is compatible with any model or framework, facilitating its integration into diverse LLM-based applications. One of the standout features of Langfuse is its observability tools, which allow users to monitor the performance and behavior of their LLMs in real-time.