# VertexAIVisualQnAChat

> **Class** in `langchain_google_vertexai`

📖 [View in docs](https://reference.langchain.com/python/langchain-google-vertexai/vision_models/VertexAIVisualQnAChat)

Chat implementation of a visual QnA model.

## Signature

```python
VertexAIVisualQnAChat()
```

## Extends

- `_BaseImageTextModel`
- `BaseChatModel`

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[View source on GitHub](https://github.com/langchain-ai/langchain-google/blob/4519f3c4b7fb2bb93f13ca48d35c423b6afd3b03/libs/vertexai/langchain_google_vertexai/vision_models.py#L251)