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Overview Agents Callbacks Chains Chat models Embeddings Evaluation Globals Hub Memory Output parsers Retrievers Runnables LangSmith Storage

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Pythonlangchain-classicsmithevaluationstring_run_evaluatorStringRunEvaluatorChainstring_evaluator

Attribute●Since v1.0

string_evaluator

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string_evaluator: StringEvaluator

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The evaluation chain.