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# init(input:output:metadata:)

Creates a usage update.

```
init(input: LanguageModelExecutorGenerationChannel.Usage.Input, output: LanguageModelExecutorGenerationChannel.Usage.Output, metadata: [String : any ConvertibleToGeneratedContent] = [:])
```

## Parameters

`input`

Token counts for the transcript.

`output`

Token counts for the response.

`metadata`

Additional metadata to record alongside the token counts.

---

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