Trajectories now in LangSmith: A readable view of every agent session
3.42T1.5 sourceLangChain Blog
Source record
Published by LangChain Blog (T1.5 source). The original is at https://www.langchain.com/blog/langsmith-trajectories-tracing.
Pipeline notes
The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.
SummaryLangSmith launched Trajectories, a chronological conversational view of agent sessions that aggregates messages from humans, AI, tools, and subagents in order of first appearance. Trajectories support online evaluators, annotation queues, and dataset routing.
Why it mattersFirst-party LangSmith feature for taming long multi-turn agent traces; pairs trajectory view with evaluators and dataset routing.

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