> ## 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.

# Billable

## Example Usage

```python theme={null}
from openrouter.components import Billable

# Open enum: unrecognized values are captured as UnrecognizedStr
value: Billable = "output_image"
```

## Values

This is an open enum. Unrecognized values will not fail type checks.

* `"output_image"`
* `"input_image"`
* `"input_font"`
* `"input_reference"`
* `"input_text"`