Title: 429 RESOURCE_EXHAUSTED — Prepay balance shows R$0 despite R$196 in funded billing account

Gemini API
1

Hello,

I am experiencing a billing synchronization bug between Google Cloud and Google AI Studio.

Billing Account ID: 0140F0-423394-839…

The issue:
My Gemini API calls are returning HTTP 429 RESOURCE_EXHAUSTED — “Your prepayment credits are depleted” — on every request.

However, my Google Cloud billing transactions clearly show:

  • Initial balance: -R$ 196.73 (credit in my favor)
  • Usage this period (June 2026): only R$ 0.67
  • Final balance: -R$ 196.06 (virtually untouched)

The “Pré-pagamento: AI Studio” tab in Cloud Console shows R$ 0.00, which does not match the actual funded balance visible in the transactions page.

What works:

  • API key authenticates successfully
  • models.list() returns results normally

What fails:

  • generateContent returns 429 on every call
  • My Google Apps Script agent (running on Google Sheets) is completely broken

I have seen multiple identical reports from other users in this forum in the past few days, all with the same pattern: funded billing account, near-zero actual usage, but AI Studio showing R$0 prepay balance.

Please review and resync my billing account.

Thank you.