# ComparisonEvaluationResult

> **Class** in `langsmith`

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

Feedback scores for the results of comparative evaluations.

These are generated by functions that compare two or more runs,
returning a ranking or other feedback.

## Signature

```python
ComparisonEvaluationResult()
```

## Extends

- `BaseModel`

## Properties

- `key`
- `scores`
- `source_run_id`
- `comment`

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/aadfe00ed2cf31808d14a32646e73030a9eeb0b5/python/langsmith/evaluation/evaluator.py#L170)