Native inference billing #433
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| import { type BillingEvent } from "@braintrust/proxy"; | ||
|
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| const DEFAULT_BILLING_TELEMETRY_URL = | ||
| "https://api.braintrust.dev/billing/telemetry/ingest"; | ||
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| function isBrainModel(model: string): boolean { | ||
| return model.startsWith("brain-"); | ||
| } | ||
|
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| function buildPayloadEvent(event: BillingEvent) { | ||
| if (!event.org_id) { | ||
| console.warn("billing event skipped: missing org_id"); | ||
| return null; | ||
| } | ||
| if (!event.model) { | ||
| console.warn("billing event skipped: missing model"); | ||
| return null; | ||
| } | ||
| // Skip non-brain models since braintrust only hosts brain models. | ||
| if (!isBrainModel(event.model)) { | ||
| return null; | ||
| } | ||
| if (!event.resolved_model) { | ||
| console.warn("billing event skipped: missing resolved_model"); | ||
| return null; | ||
| } | ||
| const hasTokenUsageData = | ||
| event.input_tokens !== undefined || | ||
| event.output_tokens !== undefined || | ||
| event.cached_input_tokens !== undefined || | ||
| event.cache_write_input_tokens !== undefined; | ||
| if (!hasTokenUsageData) { | ||
| console.warn("billing event skipped: missing token usage"); | ||
| return null; | ||
| } | ||
| const requestId = crypto.randomUUID(); | ||
| const timestamp = new Date().toISOString(); | ||
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||
| return { | ||
| event_name: "NativeInferenceTokenUsageEvent", | ||
| external_customer_id: event.org_id, | ||
| timestamp, | ||
| idempotency_key: requestId, | ||
| properties: { | ||
| model: event.model, | ||
| resolved_model: event.resolved_model, | ||
| org_id: event.org_id, | ||
| input_tokens: event.input_tokens, | ||
| output_tokens: event.output_tokens, | ||
| cached_input_tokens: event.cached_input_tokens, | ||
| cache_write_input_tokens: event.cache_write_input_tokens, | ||
| }, | ||
| }; | ||
| } | ||
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| export async function sendBillingTelemetryEvent({ | ||
| telemetryUrl, | ||
| event, | ||
| }: { | ||
| telemetryUrl?: string; | ||
| event: BillingEvent; | ||
| }): Promise<void> { | ||
| try { | ||
| const payloadEvent = buildPayloadEvent(event); | ||
| if (!payloadEvent) { | ||
| return; | ||
| } | ||
|
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| const destination = telemetryUrl || DEFAULT_BILLING_TELEMETRY_URL; | ||
| const response = await fetch(destination, { | ||
| method: "POST", | ||
| headers: { | ||
| Authorization: `Bearer ${event.auth_token}`, | ||
| "Content-Type": "application/json", | ||
| }, | ||
| body: JSON.stringify({ | ||
| events: [payloadEvent], | ||
| }), | ||
| }); | ||
|
|
||
| if (!response.ok) { | ||
| const responseBody = await response.text(); | ||
| console.warn( | ||
| `billing event failed: ${response.status} ${response.statusText} ${responseBody}`, | ||
| ); | ||
| } | ||
| } catch (error) { | ||
| console.warn("billing event threw an error", error); | ||
| } | ||
| } | ||
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i added this guard after testing with gpt-5-mini