€54k spike in 13h from unrestricted Firebase browser key accessing Gemini APIs
6 hours ago
- #Billing Issue
- #Firebase AI Logic
- #Gemini API
- Unexpected €54,000+ Gemini API charge occurred hours after enabling Firebase AI Logic on an existing Firebase project.
- Spike in Gemini API usage was not correlated with actual users and appeared automated, happening overnight.
- Budget alerts triggered with delay; costs reached €28,000 before reaction and settled at €54,000+.
- Google Cloud support denied billing adjustment, classifying charges as valid usage from the project.
- Seeking guidance on similar experiences, safeguards beyond App Check and quotas, and potential escalation paths.