Korean developer got $17.8 million wrong bill from Anthropic

A Korean developer got two huge bills from Anthropic for using Claude API, totaling nearly $17.8 million. The first was about $1.6 million, and the second $16.62 million, but the API dashboard showed $0 spent.

The developer uses AI agents for coding via API. While infinite loops can cause high token costs, a $16.62 million bill in one cycle is nearly impossible for an individual, according to tech media. Anthropic sent automated payment notices, but the amounts didn't match actual usage.

This might be a system error, and the developer needs to contact Anthropic. The incident raises concerns about AI API billing accuracy, especially for individual users facing huge bills.