AI Studio access blocked - unable to replenish Gemini API prepaid credits (HTTP 402)

Hello,

We are using the Gemini Developer API for a production application under our company Google account.

Project:

  • Project name: Countec-AI
  • Project ID: countec-ai

Our Google Cloud Billing account is active and postpaid.

However, the Gemini Developer API is currently failing with:

HTTP 402 RESOURCE_EXHAUSTED
“Your prepayment credits are depleted.”

According to the Gemini API billing documentation, we need to access the Google AI Studio Billing page to purchase or replenish prepaid credits.

The problem is that our company account cannot access Google AI Studio (aistudio.google.com). When we try to access it, we receive a message that AI Studio is not accessible for this account.

We also checked the Google Admin Console. The relevant Google services appear to be enabled, but AI Studio access is still denied.

We contacted Google Cloud Billing Support about this issue.

Google Cloud Support Case:
#75799629

Cloud Billing Support confirmed that the AI Studio access issue is outside the scope of Cloud Billing Support and directed us to the Google AI Developers community for further assistance.

Could you please help us determine:

  1. Why Google AI Studio access is blocked for our company account?
  2. How we can restore access to the AI Studio Billing page?
  3. If AI Studio access cannot be restored, is there another supported way to purchase or replenish Gemini Developer API prepaid credits?

We would prefer to keep our existing Gemini Developer API integration and existing production API key. We do not want to migrate or change the production integration until the billing/access issue is understood.

Thank you.