> When your Prepay credit balance on the billing account hits $0, all API keys in all projects linked to that billing account will stop working simultaneously.

> When your Prepay credit balance on the billing account hits $0, all API keys in all projects linked to that billing account will stop working simultaneously. Prepay credits apply only to Gemini API usage costs; you can't use them to pay for other Google Cloud services. https://ai.google.dev/gemini-api/docs/billing#prepay https://ai.google.dev/gemini-api/docs/billing#prepay