What makes AI API spend chargeback-safe by team/service?

The ongoing discussions in the r/FinOps community highlight the growing pains of managing AI API costs, particularly around tracking and attributing expenses to specific teams, services, or tenants. The challenge lies in distinguishing token spend increases from accurately linking these costs back to responsible entities, which is crucial for effective cost management and accountability. Understanding these nuances can significantly impact how organizations approach budget allocation and financial oversight in the increasingly AI-driven landscape.