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Overview
LangSmith is a comprehensive observability platform purpose-built for AI agents and LLM applications. It provides developers with complete visibility into agent behavior, enabling them to trace complex multi-step workflows, monitor production performance in real-time, and automatically detect usage patterns and failure modes.
Developers love LangSmith because it solves the critical challenge of debugging AI systems. With native tracing for popular agent frameworks and OpenTelemetry SDKs for Python, TypeScript, Go, and Java, teams can pinpoint issues hurting latency, cost, and response quality. The platform's purpose-built SmithDB database delivers sub-second performance across millions of traces, making it possible to search and debug deeply nested agent traces with heavy payloads.
Beyond basic tracing, LangSmith offers advanced monitoring capabilities including online LLM-as-judge evaluations, cost tracking, and automated insights that cluster traces to reveal common agent
