Export AI Gateway traces with Vercel Drains

AI Gateway now produces an OpenTelemetry trace for every request. Pro and Enterprise teams can send these traces through Vercel Drains to any OTLP/HTTP-compatible endpoint, including native integrations for Braintrust, Dash0, Kubiks, Sentry, and Statsig. Each trace shows the full request lifecycle, including: Model and provider routing Fallback and retry attempts Token usage and cost Time to first token, request duration, and response status Project, deployment, API key, environment, and custom tag attribution Trace Drains do not include prompt or completion content. Sampling controls let you