# CoTQA

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/smith/evaluation/config/RunEvalConfig/CoTQA)

Configuration for a context-based QA evaluator.

## Signature

```python
CoTQA()
```

## Extends

- `SingleKeyEvalConfig`

## Properties

- `evaluator_type`
- `llm`
- `prompt`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/c59e83a1ffba63d709ea4847445845edd82085dc/libs/langchain/langchain_classic/smith/evaluation/config.py#L201)