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LangSmith · Method

Client.evaluate

Client.evaluate() runs an application over a LangSmith dataset and scores each output with evaluators. It creates an experiment whose results can be viewed in the UI or processed through the SDK.

Last updated

Since
langsmith >= 0.3.13

Syntax

Client.evaluate(target, *, data, evaluators=None, experiment_prefix=None, description=None, max_concurrency=None, metadata=None, blocking=True)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

Subscribe
  • aevaluate()
  • ExperimentResults
  • EvaluationResult
  • Run an evaluation asynchronously
  • How to read experiment results locally

Source: How to evaluate agents. Checked 2026-11-03.