Manual billing sync request — "Error during billing setup" on multiple projects despite active Cloud Billing payment method

Gemini API
1

I’m hitting “Error during billing setup” when clicking “Activate billing” in AI
Studio, across multiple projects under my account — all three show “Free trial”
/ Free tier limits despite Cloud Billing showing an active payment method in
Google Cloud Console:

  • gen-lang-client-07340052.. (key ends …BUfQ)
  • gen-lang-client-04122107.. (key ends …ML7w)
  • gen-lang-client-06256098.. (key ends …bAfw)

This matches other reports of a sync mismatch between Cloud Billing and AI
Studio’s prepayment system. Could someone manually sync billing status for
these three projects? Happy to provide any additional details needed.

2

Hello @Chris_Reiter ,

To send a DM(Direct Message), click on my profile picture or name, and then select the Message button."

3

I do not see a message button

4

Hello @Chris_Reiter ,

I have DM’ed you.

5

Hello @Chris_Reiter ,

To help us investigate the exact error, could you please share a browser network recording (HAR file)? This will allow us to inspect the underlying API request and error response returned when you click the button.

Steps to capture the HAR file:

  1. In Google AI Studio, open Developer Tools by pressing F12 (or right-click anywhere on the page and select Inspect).
  2. In the Developer Tools panel, switch to the Network tab.
  3. Check the Preserve log checkbox.
  4. Reproduce the issue by clicking Set up prepay (or triggering the error).
  5. Once the error appears, right-click anywhere in the list of network requests and select Save all as HAR with content (or click the Export HAR download icon).
  6. Share the saved .har file with us here (or via private message).

(For additional details, see the Google Cloud guide on capturing browser traces.)