---
title: input
framework: foundationmodels
role: symbol
role_heading: Instance Property
path: foundationmodels/languagemodelsession/usage-swift.struct/input-swift.property
---

# input

The input token counts from the transcript.

## Declaration

```swift
var input: LanguageModelSession.Usage.Input
```

## See Also

### Updating the usage

- [LanguageModelSession.Usage.Input](foundationmodels/languagemodelsession/usage-swift.struct/input-swift.struct.md)
- [output](foundationmodels/languagemodelsession/usage-swift.struct/output-swift.property.md)
- [LanguageModelSession.Usage.Output](foundationmodels/languagemodelsession/usage-swift.struct/output-swift.struct.md)
- [metadata](foundationmodels/languagemodelsession/usage-swift.struct/metadata.md)
- [totalTokenCount](foundationmodels/languagemodelsession/usage-swift.struct/totaltokencount.md)