Function getFalAICostMetadata

apps/sim/lib/tools/falai-pricing.ts:160–214

({
  apiKey,
  endpointId,
  requestId,
}: {
  apiKey: string
  endpointId: string
  requestId: string
})

}

export async function getFalAICostMetadata({
  apiKey,
  endpointId,
  requestId,
}: {
  apiKey: string
  endpointId: string
  requestId: string
}): Promise<FalAICostMetadata> {
  for (let attempt = 0; attempt < FALAI_BILLING_EVENT_ATTEMPTS; attempt++) {
    const event = await fetchFalAIBillingEvent(apiKey, requestId)
    if (event) {
      return {
        endpointId: event.endpoint_id,
        requestId: event.request_id,
        costDollars: event.cost_estimate_nano_usd / 1_000_000_000,
        source: 'billing_events',
        outputUnits: event.output_units,
        unitPrice: event.unit_price,
        percentDiscount: event.percent_discount,
        currency: 'USD',
      }
    }

    if (attempt < FALAI_BILLING_EVENT_ATTEMPTS - 1) {
      await sleep(FALAI_BILLING_EVENT_RETRY_MS)
    }
  }

  const estimate = await estimateFalAICallCost(apiKey, endpointId)
  if (estimate.costDollars !== undefined) {
    return {
      endpointId,
      requestId,
      costDollars: estimate.costDollars,
      source: 'historical_estimate',
      currency: 'USD',
    }
  }

  logger.warn('Fal.ai cost metadata unavailable after generation completed', {
    endpointId,
    requestId,
    error: estimate.error,
  })

  return {
    endpointId,
    requestId,
    costDollars: getFalAIFallbackProviderCostDollars(endpointId),
    source: 'fallback_floor',
    currency: 'USD',
    error: estimate.error,
  }
}