Langfuse serves as an open-source engineering platform oriented toward assisting developers in the construction, surveillance, and enhancement of large language model (LLM) applications. It is outfitted with instruments for monitoring, tracking metrics, managing prompts, and conducting evaluations, thus enabling teams to proficiently refine their LLM processes. Offering options for self-hosting as well as a cloud-based variant, Langfuse is versatile for startups and established corporations alike.