> ## 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.

# Source

Benchmark source to query. Determines the shape of the returned items. When omitted, returns results from all sources.

## Example Usage

```python theme={null}
from openrouter.operations import Source

# Open enum: unrecognized values are captured as UnrecognizedStr
value: Source = "artificial-analysis"
```

## Values

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

* `"artificial-analysis"`
* `"design-arena"`
* `"openrouter"`