# RunEvaluator

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/evaluation/evaluator/RunEvaluator)

Evaluator interface class.

## Signature

```python
RunEvaluator()
```

## Properties

- `feedback_keys`

## Methods

- [`evaluate_run()`](https://reference.langchain.com/python/langsmith/evaluation/evaluator/RunEvaluator/evaluate_run)
- [`aevaluate_run()`](https://reference.langchain.com/python/langsmith/evaluation/evaluator/RunEvaluator/aevaluate_run)

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/ea8caba352b122b6f36fc5eaf45756ca00470e0a/python/langsmith/evaluation/evaluator.py#L124)