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According to an August 2026 article in Business Insider, a Microsoft employee ran up $28,000 in artificial intelligence charges in 28 days without buying anything.
He was using AI tools to do his job, and the company was billed for what the industry calls tokens. A token is a small unit of work: You ask one of these systems a question, it breaks the question into pieces and works through them, and each piece is a billable token.
AI tokens make up a new kind of business expense that companies are beginning to budget for. Individual users will eventually see this cost, too, even though most AI tools are still free or nearly free.
I recently encountered this myself when I hit a usage limit on an AI tool in the middle of a project. Not wanting to wait five hours for the allowance to reset, I told it to bill me for the overage. It only took 15 minutes to burn through nearly $50. Because I had notifications turned on, I could see the meter running and shut down the program.
Without that real-time notification, I might have gone merrily on my way until I finished my project, then been shocked when I realized what it had cost. This may well be what happened for the Microsoft employee who ran up the headline-worthy tab.
The Background Cost of Metered Money
Tokens, like subscriptions and utility bills, are metered money. If I buy a $5 cup of coffee and swipe a card or hand over cash, I actively participate in the transaction. Metered money, by contrast, runs up in the background. We tend not to notice it because we are not deliberately deciding to spend it in the moment.
If you are among the many people beginning to use AI tools, be aware that at some point you will need to budget for them. Here are a few ideas to help you avoid expensive surprises.
