LangSmith

LangSmith is a platform part of the LangChain ecosystem that focuses on observability, evaluation and deployment of agent-based AI applications. It enables developers to trace what their agents do step by step, monitor business-critical metrics like latency, cost and quality, and drill down into behaviour patterns for reliability. :contentReference[oaicite:1]{index=1} The Observability component allows framework-agnostic integration (works with or without LangChain/LangGraph), supports OpenTelemetry (OTel) instrumentation for full stack tracing. :contentReference[oaicite:2]{index=2} It supports deployment in self-hosted environments for enterprise data isolation, dashboards for usage and cost, and root-cause analysis of agent workflows. :contentReference[oaicite:3]{index=3}