On top of being the hardest website to navigate, Google console a) doesn't have real time billing (!) b) doesn't allow you to set a budget limit.
Sorry but it's not worth waking up with a 100k$ bill, fix your platform first.
You prepay for tokens exactly like the OpenAI/Anthropic dev dashboards when using AI Studio, which the link above is pointing to not GCP, also there are project specific spend caps now.
Oh it’s worse than that. There are places where you CAN set a limit. This seems great until you are at the center of a huge traffic spike because of good pr and so you try to change it to a larger number only to be told you need to wait 24 hours for the setting to change.
Biggest traffic day of the decade and our site was down because of google.