Is there any way to set a monthly quota for Google Vision AI? Right now I'm able to find quotas only for:
I just want to be sure that I won't spend more than a predefined number of dollars for this API.
You can set up billing alerts so that you are notified. You can break it down by Product, including Vision API.
There's no way to have Vision API automatically block all requests once reaching a certain dollar amount. However you could listen for budget alerts and have your app react accordingly.