> ## 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.

# ResponseFormat

The response format. "json" (default) returns \{ text, usage }; "verbose\_json" additionally returns task, language, duration, and segment-level timestamps (OpenAI-compatible providers only).

## Example Usage

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

# Open enum: unrecognized values are captured as UnrecognizedStr
value: ResponseFormat = "json"
```

## Values

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

* `"json"`
* `"verbose_json"`