# LLMManagerMixin

> **Class** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin)

Mixin for LLM callbacks.

## Signature

```python
LLMManagerMixin()
```

## Methods

- [`on_llm_new_token()`](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin/on_llm_new_token)
- [`on_llm_end()`](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin/on_llm_end)
- [`on_llm_error()`](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin/on_llm_error)
- [`on_stream_event()`](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin/on_stream_event)

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/f40f58d50499700f98051be6bb610bee5dd11cc2/libs/core/langchain_core/callbacks/base.py#L62)