Function setUsageAttributes

setUsageAttributes(span, usage): void
Token usage in the convention's names.

Per the convention the detailed counts are subsets of the totals, so cached and reasoning tokens are reported alongside — not added to — input and output tokens.
Parameters
- span: Span
- usage: {
      cacheCreationTokens?: number;
      completionTokens?: number;
      promptCachedTokens?: number;
      promptTokens?: number;
      reasoningTokens?: number;
  }
  - Optional cacheCreationTokens?: number
  - Optional completionTokens?: number
  - Optional promptCachedTokens?: number
  - Optional promptTokens?: number
  - Optional reasoningTokens?: number
Returns void
- Defined in agents/src/telemetry/gen_ai.ts:395