> ## 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.

# PrivateEndpointReasoningReturnMechanism

Where the upstream puts reasoning tokens in its response: `reasoning` and `reasoning-content` are response fields, `content-string` is inline in the message, `none` returns no reasoning. `null` uses the provider default.

## Example Usage

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

# Open enum: unrecognized values are captured as UnrecognizedStr
value: PrivateEndpointReasoningReturnMechanism = "content-string"
```

## Values

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

* `"content-string"`
* `"reasoning-content"`
* `"reasoning"`
* `"none"`