LangSmith
ServiceLangSmith is LangChain’s hosted observability and evaluation service for applications built with large language models. It provides tracing, dataset testing, and runtime analytics so developers can debug, monitor, and improve their chains and agents in production.
Stories
Completed digest stories linked to this service.
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Evaluate and observe LLM agents in production2026-03-06Shipping LLM agents safely now requires an evaluation pipeline and production observability to catch regressio...
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Operationalizing Agent Evaluation: SWE-CI + MLflow + OTel Tracing2026-03-05A new CI-loop benchmark and practical guidance on evaluation and observability outline how to move coding agen...
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LangChain Core 1.2.14 stabilizes tool-call merges, preserves metadata, and tight...2026-02-20LangChain Core 1.2.14 delivers targeted fixes and docs updates to stabilize parallel tool calls, preserve merg...