Langfuse

Langfuse is a robust observability and evaluation platform designed specifically for LLM applications and AI agents. It provides detailed tracing, prompt management, user and cost tracking, online/offline evaluation with human or LLM-as-judge scoring, dataset management, session and user analytics, and integrations with common SDKs and observability tools. Langfuse is ideal for AI/ML teams, LLM app developers, and enterprises looking to operationalize, monitor, evaluate, and optimize their GenAI products at scale.