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

# Abso

[Abso](https://abso.ai/#router) is an open-source LLM proxy that automatically routes requests between fast and slow models based on prompt complexity. It uses various heuristics to chose the proper model. It's very fast and has low latency.

## Installation and setup

```bash theme={null}
pip install langchain-abso
```

## Chat Model

See usage details [here](/oss/python/integrations/chat/abso)