Introducing LangSmith Tuned Evaluators They automatically score agent behavior i
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LangChain
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LangChain
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Terms in this piece · Glossary
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
eval — A repeatable test for AI quality — a set of tasks plus scoring — used the way software teams use test suites, because model output is too variable to judge by eyeballing.
Why it matters
Online evalA repeatable test for AI quality — a set of tasks plus scoring — used the way software teams use test suites, because model output is too variable to judge by eyeballing.Full definition → of production AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → traces is usually priced out by frontier-model judges, and a tuned small model that claims better accuracy at a fraction of the cost changes that calculus.
articleYour agents can now pay for the APIs they use. We worked with AWS on the AgentCo
articleLangSmith is now available as a bring your own cloud deployment on @awscloud. Ke
