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

# Modality

Restrict to models for a modality surface: `text` / `image_output` match output modality, `image` / `audio` match input modality, and `tool_calling` keeps only rows that recorded at least one tool call. Exact dataset — cannot be combined with `category` or `language_type`.

## Example Usage

```typescript theme={null}
import { Modality } from "@openrouter/sdk/models/operations";

let value: Modality = "text";

// Open enum: unrecognized values are captured as Unrecognized<string>
```

## Values

```typescript theme={null}
"text" | "image" | "image_output" | "audio" | "tool_calling" | Unrecognized<string>
```