Function parseResponsesUsage

apps/sim/providers/openai/utils.ts:390–411

(
  usage: OpenAI.Responses.ResponseUsage | undefined
)

 * when output_tokens is missing or zero.
 */
export function parseResponsesUsage(
  usage: OpenAI.Responses.ResponseUsage | undefined
): ResponsesUsageTokens | undefined {
  if (!usage) {
    return undefined
  }

  const inputTokens = usage.input_tokens ?? 0
  const outputTokens = usage.output_tokens ?? 0
  const cachedTokens = usage.input_tokens_details?.cached_tokens ?? 0
  const reasoningTokens = usage.output_tokens_details?.reasoning_tokens ?? 0
  const completionTokens = Math.max(outputTokens, reasoningTokens)
  const totalTokens = inputTokens + completionTokens

  return {
    promptTokens: inputTokens,
    completionTokens,
    totalTokens,
    cachedTokens,
    reasoningTokens,
  }
}

/**
 * Creates a ReadableStream from a Responses API SSE stream.