Manual Billing Sync Request: 429 "prepayment credits are depleted" despite funded Cloud Billing account

Gemini API
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1

My Gemini API requests are failing with an HTTP 429 RESOURCE_EXHAUSTED error stating “Your prepayment credits are depleted”, despite having an active, funded Google Cloud Billing account linked to the project.

Account & Project Details:

  • Project Name: Resume Automation Project

  • Project ID: gen-lang-client-0969524..

  • Billing Account ID: 01B5BC-394DAF-965..

  • Billing Account Name: My Billing Account

  • Current Account Balance: Funded / Active credit balance of ₹1,098.31 (Manual payment completed on 25 Aug 2026)

Issue Summary:

  1. In Google Cloud Console, the project is active, Postpay is enabled, billing linkage is confirmed, and the account shows a credit balance of ₹1,098.31.

  2. In Google AI Studio, the project remains stuck with a red status badge (Prepay required).

  3. Attempting to click “Set up prepay” inside AI Studio fails to render, resulting in a black/blank modal popup overlay.

  4. API calls to generativelanguage.googleapis.com fail continuously with:{
    “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”
    }
    }

Actions Taken:

  • Verified billing linkage between Billing Account 01B5BC-394DAF-965E.. and Project gen-lang-client-09695241.. in GCP Console.

  • Re-generated new API keys assigned specifically to gen-lang-client-096952414..

  • Tried multiple browsers, incognito modes, and mobile browsers to clear the black payment modal.

Could a staff member please perform a manual backend billing sync on Project ID gen-lang-client-09695241.. to update AI Studio’s internal billing state and acknowledge the active Cloud balance?

2

Hello @er.vijayrajput ,
Do you see any error on the screen when trying to setup pre-pay or does the screen is stuck on the blank overlay? To help further investigate, could you please share a screenshot or video recording showing the exact steps and workflow you take when attempting to set up pre-paid billing?

3

The screen will be stuck on the blank overlay.

4

any update regrading? i tried all possible ways but it’s not working, same black overlay is coming every-time.