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LangSmith · Interface

RunEvaluator

DynamicRunEvaluator turns a function into a LangSmith run evaluator. The function receives a run and optional example, and it can support synchronous or asynchronous evaluation.

Last updated

Since
v0.5

Syntax

DynamicRunEvaluator(func, afunc=None)

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

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  • RunEvaluator
  • LLMEvaluator
  • Client.evaluate_run

Source: DynamicRunEvaluator | langsmith | LangChain Reference. Checked 2026-11-03.