UsageChunk

Cumulative token usage emitted once after provider content and tool chunks.

Class Diagram

---
title: UsageChunk
config:
  look: handDrawn
  theme: colorful
  class:
    hideEmptyMembersBox: true
---
classDiagram
    class StreamChunk {
      <<abstract>>
        +string kind
    }
    StreamChunk <|-- UsageChunk
    class UsageChunk {
        +string kind
        +InvocationUsage usage
    }
    class InvocationUsage {
        +int64 inputTokens
        +int64 outputTokens
        +int64 totalTokens
    }
    UsageChunk *-- InvocationUsage

Properties

Name	Type	Description
kind	string	The kind identifier for usage chunks
usage	InvocationUsage	Complete cumulative token usage for the completed provider invocation

Composed Types

The following types are composed within UsageChunk:

• InvocationUsage