> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# any-llm integrations

> Integrate with any-llm using LangChain Python.

> [any-llm](https://github.com/mozilla-ai/any-llm) is a unified interface for calling OpenAI, Anthropic, Google, local models (via Ollama/LocalAI), and [more](https://mozilla-ai.github.io/any-llm/providers/). Switch between providers just by changing a string.

## Installation and setup

<CodeGroup>
  ```bash pip theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pip install langchain-anyllm
  ```

  ```bash uv theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  uv add langchain-anyllm
  ```
</CodeGroup>

You need the appropriate API key for your chosen provider. API keys can be passed via the `api_key` parameter or set as environment variables (e.g., `OPENAI_API_KEY`, `ANTHROPIC_API_KEY`). See the [any-llm documentation](https://mozilla-ai.github.io/any-llm/providers/) for provider-specific requirements.

## Chat models

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
from langchain_anyllm import ChatAnyLLM
```

***

## API reference

For detailed documentation of all `ChatAnyLLM` features and configurations, head to the API reference: [https://github.com/mozilla-ai/langchain-any-llm](https://github.com/mozilla-ai/langchain-any-llm)

***

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