AI costs can spiral quickly when building with agentic systems, but most teams lack visibility into where their token budgets actually go. In this Operator's edition of The AI Daily Brief, Nufar Gaspar breaks down the fundamentals of AI tokens—what they represent, how they drive costs, and critically, which tokens constitute genuine progress versus waste. The episode focuses on practical metrics for AI operations: measuring cost per successful task rather than cost per token, identifying and eliminating "tokens that spin" (computational overhead that produces no value), and selecting the right models for specific use cases. Gaspar emphasizes that while controlling costs matters, teams must also protect experimentation—the high-token phases where innovation happens. For builders deploying agentic systems at scale, the framework offered here addresses a growing pain point: how to maintain efficiency and cost control without crippling the R&D cycles that create competitive advantage.