Manual billing sync request — 429 "prepayment credits are depleted" despite funded Cloud Prepay account

Gemini API
1

Hello Google team,

I am requesting a manual billing sync. Every generateContent call returns 429 RESOURCE_EXHAUSTED with “Your prepayment credits are depleted”, even though my prepay account is funded and AI Studio shows the credit as available.

Details:

  • Project name: Default Gemini Project
  • Project ID: gen-lang-client-09454420..
  • Project number: 4650177602..
  • Cloud Prepay billing account: 016037-DAE30B-54F1..
  • Prepayment: USD 10.00 added on July 20, 2026 (charged successfully to card)
  • AI Studio credits page shows: “Crédito disponible USD 10.00”
  • API key belongs to this same project (verified in the API key list)
  • Affected models: gemini-2.5-flash and gemini-2.5-flash-image
  • Every call fails immediately (3-5 seconds), 100% of requests

Exact error:
{
“error”: {
“code”: 429,
“message”: “Your prepayment credits are depleted. Please go to AI Studio at https://ai.studio/projects to manage your project and billing.”,
“status”: “RESOURCE_EXHAUSTED”
}
}

So the balance is visible in AI Studio but the API does not recognize it. This matches other reports of a billing state that never propagated after a prepayment.

This is blocking a production workflow. Could you please trigger a manual billing sync for this project?

Thank you.