# OpenAIAPIContextOverflowError

> **Class** in `langchain_openai`

📖 [View in docs](https://reference.langchain.com/python/langchain-openai/chat_models/base/OpenAIAPIContextOverflowError)

APIError raised when input exceeds OpenAI's context limit.

## Signature

```python
OpenAIAPIContextOverflowError()
```

## Extends

- `openai.APIError`
- `ContextOverflowError`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/1c6bfc8f608581f889a8dc625402234ff72d1cd3/libs/partners/openai/langchain_openai/chat_models/base.py#L557)