LanguageModelSession.Usage Information about how many tokens were used by a response. Declarationstruct Usage TopicsCreating a token usage instanceinit(input:output:metadata:)Updating the usageinputLanguageModelSession.Usage.InputoutputLanguageModelSession.Usage.OutputmetadatatotalTokenCount RelationshipsConforms ToSendableSendableMetatype See AlsoInspecting a sessionusagepropertiestranscriptErrorHandlingPolicy