The unexpected usage of the "Gemini for Google Cloud API" is likely due to automatic activation by Firebase or certain Google Cloud Console features potentially triggered by dashboard activity or background processes. Especially those using Firebase services such as Firebase Cloud Messaging and Remote Config for Android apps.

• To investigate further, click on the “Gemini for Google Cloud API” entry in the API dashboard to trace the source of the usage.

• If the API is enabled you can disable the “Gemini for Google Cloud API” to stop the API usage.