[CRITICAL-BUG] Massive Overbilling by Gemini API (Over $70k), Charges Still Increasing by $10k Daily Even After Deleting All API Keys

To all developers using the Gemini API,

I am writing to share critical information about a severe billing bug we have encountered with the Gemini API and the emergency actions we have taken. We hope this information helps anyone else facing the same terrifying situation.

【The Problem We Are Facing】

Our company received an erroneous bill for over 10 million JPY (more than $70,000 USD) for Gemini API usage that we did not incur.

Most alarmingly, even after deleting all related API keys, the charges are STILL INCREASING by approximately 1.5 million JPY (nearly $10,000 USD) EVERY DAY.

Fortunately, we had noticed the suspicious billing increase a few days prior and had removed our company’s debit card from the payment profile. This action prevented the catastrophic transaction from completing. However, had we not caught this in time, it could have led to a situation that would threaten the survival of our business. We consider this to be an issue of the utmost severity.

【Our Recommended Action Plan for Affected Users】

We are currently working with Google’s billing support, who have now acknowledged the bug, and the issue is under investigation by their technical department. In the meantime, here are the steps we have taken that we believe are essential for anyone in this situation.

1. Send the Official Status Page Link to Billing Support Immediately contact Google Cloud billing support and provide them with the URL to the official Google AI Studio status page. This will prove that you are not an isolated case. Google AI Studio

Key Point: When we first contacted support, the agent was not aware of this specific bug. Showing them this official acknowledgment helps them quickly understand that it’s a widespread system failure, not an issue with your individual account.

2. Delete All Your Gemini API Keys Immediately To stop the source of the billing, go to your Google Cloud Platform console and delete or disable every single API key associated with your projects.

3. Document and Report Continued Billing After Key Deletion In our case, the billing has continued to increase daily even after all API keys were deleted. This is the most critical evidence you can provide.

Take screenshots of your console showing that no API keys exist, alongside screenshots of your billing dashboard showing the charges still rising. Submit this as objective proof that the problem is entirely on Google’s end and beyond your control.

4. Request to Prevent Service Suspension Due to “Non-Payment” This massive erroneous charge will likely result in a failed payment. It is crucial to insist that your other essential Google Cloud services are NOT suspended due to this “non-payment.” Make it clear that you will not pay for fraudulent charges, but you need your other services to remain active.

This billing bug could be an extremely widespread and devastating issue, potentially affecting a significant percentage of Gemini API users worldwide.

If you are facing a similar situation, we sincerely hope this information helps you take action. We also encourage you to share any other effective measures you have discovered in the comments below. Let’s share information to get through this.

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If you are experiencing a similar bug, please contact billing support with the following information:

  1. Inform them that a Gemini billing bug is occurring.

A bug in the billing system is causing erroneous charges on ‘Gemini 2.5 Flash Native Image Generation’ for some users. All such charges will be refunded.

  1. Open the Gemini API in your billing statement, take a screenshot that includes ‘Gemini 2.5 Flash Native Image Generation’, and send it to them (attached).

  2. Send them this thread on the Google Developer Forum.
    Gemini API cost suddenly skyrocketed - #107 by Tomohisa_Ikuta

The official Geimini website announced the following:

The issue has been resolved. Refunds have been issued, and we expect the changes to be displayed on customer accounts within 48 hours.

However, even after the 48 hours have passed, charges due to the billing bug have not stopped on our account.

If anyone is experiencing a similar bug, we would appreciate any information you can provide.

We have also not received any response to our billing support inquiries, making this an extremely dangerous situation.

To everyone at Google, we would appreciate your help so that we can use Geimini, this amazing AI, with peace of mind.

Thank you for this post… However, I’m now getting nailed two days in a row and the API key has been disconnected. And their status page isn’t showing they’re having a billing problem yet it’s happening to me right now.

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I’m in the same situation, and I haven’t received any contact from billing support. The effects of this billing bug remain.

Let’s all negotiate with Google and overcome this somehow.

I’m in Japan, and I’ve just notified the Ministry of Economy, Trade and Industry, and they are considering how to respond.

I deactivated all my API’s yesterday and they racked up another $329.29.
How do you report this? Where?

It takes 1-2 days for GCP charges to be reflected. Therefore, although I’m not sure, it’s possible that the charge was added when I disabled the API.

I had no choice but to disable billing, shut down the project, and set up a new environment.

Hello,

We understand that billing related issues are urgent and require timely and accurate resolution. For this reason, we have a dedicated team that is handling billing concerns.

We kindly recommend raising your issue through billing support, where you will receive faster and more accurate assistance.

Thank you for your understanding.

Thank you for your support.
I have already contacted billing support and have been told that the technical team is currently investigating.
The ID and case are as follows:

Google Cloud Project ID: xroid-459200
Billing Support Case: 62587733

How did you managed to get to billing support? We are getting a chatbot with endless links to admin interface…nothing useffull.

You can contact Google’s “Billing Support” via the link below.

Even if you create a case and post within it, you won’t get any replies. If you click “Get billing support,” open the chat, and select “I’d like to speak to a human agent” twice or so, you’ll be able to chat with a representative.

Thank you! We’ve managed to make a ticket.

Thank you for your efforts to fix the Gemini billing bug.

We are currently receiving a growing number of reports of the Gemini billing bug, as shown below.

We believe the Gemini team is currently working on this, but we appreciate your cooperation.

This is an interesting insight. We have noted it and shared it with the concerned team.

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Hello,

I’m wondering if anyone has gotten support from Google yet to fix their billing and remove incorrect transactions? If you have, please let me know.

It’s been over a week since my last email to Google support, and I still haven’t received a response. Before that, the support team kept insisting that my account was updated, but when I showed them proof, they just stopped replying.

Because these outstanding charges haven’t been resolved, I keep getting emails demanding payment. I’m incredibly stressed and have completely lost my patience with Google’s support. I honestly don’t think I’ll ever use their services again.

Is anyone else in the same boat? Do you think Google even cares about individual users like us anymore?


If you contact them via case, you won’t get a reply, so please contact them via chat.
When you first chat, you’ll be connected to an AI, but if you type “I’d like to speak to a human agent” twice, you’ll be connected to a human.
This will allow them to look into your case more quickly.

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Thanks for pointing that out. I actually already contacted a human agent about this, but they just took down the details and said they’d get back to me via email.

I’m pretty disappointed with the lack of progress, but I’m going to tried contacting another human agent to see if I can get a real answer. Hopefully, they’ll have a solution soon.

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I am in the same boat. I have not touched my api and it has racked up about $400. Trying to get a refund.

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It looks like there has been, or is even currently being, a major leak of API keys, and not a bug or error since it still hasn’t been fixed.

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Really. how did you find this? I deleted my api key can they still use it if it is disabled?

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