---
title: LanguageModelSession.ResponseStream.AsyncIterator
framework: Foundation Models
role: symbol
role_heading: Structure
platforms: [iOS 26.0+, iPadOS 26.0+, Mac Catalyst 26.0+, macOS 26.0+, visionOS 26.0+, watchOS 27.0+]
path: foundationmodels/languagemodelsession/responsestream/asynciterator
---

# LanguageModelSession.ResponseStream.AsyncIterator

An asynchronous iterator that produces snapshots of partially generated content.

## Declaration

```swift
struct AsyncIterator
```

## Relationships

### Conforms To

- [AsyncIteratorProtocol](swift/asynciteratorprotocol.md)