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

# Extended Variant

> Extended context windows with :extended

The `:extended` variant provides access to model versions with extended context windows.

## Usage

Append `:extended` to any model ID:

```json lines theme={null}
{
  "model": "openai/gpt-4o:extended"
}
```

## Details

Extended variants offer larger context windows than the standard model versions, allowing you to process longer inputs and maintain more conversation history.