# ModelRateLimitError

> **Class** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/exceptions/ModelRateLimitError)

Exception raised when a model provider rate limit is exceeded (HTTP 429).

## Signature

```python
ModelRateLimitError()
```

## Extends

- `ModelError`

## Properties

- `is_retryable`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/c088db971097f0f12c7b8c30d473e8dbde09c823/libs/core/langchain_core/exceptions.py#L99)