# Notes on AI spend

> Articles from the Costura project on AI provider billing, usage data and keeping track of who spends what.


Articles from the Costura project: how AI providers bill, how to read their usage data, and
how to keep track of who spends what.


- [You need to tell the story of where the AI money goes](https://costura.ai/blog/ai-spend-needs-a-story/index.md): A bill tells you how much. It never tells you who, why, or what you got for it. That gap is why I started Costura. (2026-10-19)