How to track LLM costs per customer in production (opens in new tab)

Tracking LLM costs per customer means attributing every model-provider charge to a specific user inside a multi-tenant product. Aggregate dashboards hide which customers are unprofitable; per-customer attribution surfaces it. This article covers instrumentation patterns, the attribution choices that scale, and what to do with the data. Why tracking LLM costs per customer matters Most teams cannot do this. According to CloudZero's 2025 State of AI Costs report, only 43% of organizations can at...