> ## 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.

# ReasoningMode

Selects the reasoning mode. `standard` is the default; `pro` engages deeper reasoning on models that support it, billed at standard token rates. Only supported by OpenAI GPT-5.6 and newer.

## Example Usage

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

# Open enum: unrecognized values are captured as UnrecognizedStr
value: ReasoningMode = "standard"
```

## Values

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

* `"standard"`
* `"pro"`