zero cost failed requests 4

https://wool-wiki.win/index.php/The_Case_for_One_API_Key_for_All_Models

Zero cost failed requests means the service doesn't charge you when something goes wrong on their end, like a server timeout or a misrouted API call. It's a fair policy that takes the financial sting out of inevitable technical hiccups, so you only pay for successful interactions, not the headaches.