[D]Is AI cost tracking/attribution a real problem or just something you deal with later?

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Hey, I’ve been noticing something while working with AI APIs (OpenAI, Anthropic, etc.) and wanted to get real input from people actually building. Once you move beyond a simple feature and start having multiple agents/workflows/users, it becomes hard to answer things like: Which feature is actually costing the most? Which user or workflow is driving usage? Why did cost spike suddenly? Are we close to breaking our budget? Most of the time, provider dashboards just show total usage, not where i...