The Custom Reporting API lets teams break down AI Gateway traffic by model, provider, user ID, custom tag, and credential type. Vercel says the endpoint works across BYOK and system credentials, so teams can consolidate spend data in one place. The company also highlights the ability to calculate margins and track customer usage more accurately.
Unified reporting makes it easier to attribute inference costs to features, customers, or pricing tiers, which is essential for margin control. It also reduces the need for extra cost-tracking infrastructure and manual spreadsheet reconciliation. For teams running multi-model AI products, this can simplify both observability and financial planning.
Teams should start tagging requests consistently with user IDs and feature labels so the reporting data is useful from day one. Then connect the reporting API to internal dashboards or billing pipelines to track real unit economics. If you are already on AI Gateway, this is one of the first features worth piloting.
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