LangSmith
LangSmith is an observability, evaluation, and debugging platform for LLM applications built by the LangChain team. It gives developers traces, prompt runs, dataset management, eval workflows, and performance monitoring so they can understand how agents and chains behave in real usage. Teams can use LangSmith to compare prompts, inspect retrieval failures, review conversation paths, and catch quality regressions before they affect users. It is built for AI engineers, application developers, and product teams maintaining chatbots, agents, RAG systems, and other model-powered features. LangSmith stands out because it connects deeply with the LangChain ecosystem while still supporting the broader workflow of testing, monitoring, and improving AI applications over time.
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