---
title: explanationStream
framework: foundationmodels
role: symbol
role_heading: Instance Property
path: foundationmodels/languagemodelsession/generationerror/refusal/explanationstream
---

# explanationStream

A stream containing an explanation about why the model refused to respond.

## Declaration

```swift
var explanationStream: LanguageModelSession.ResponseStream<String> { get }
```

## See Also

### Getting the explanation

- [explanation](foundationmodels/languagemodelsession/generationerror/refusal/explanation.md)