We have a project in ai studio that is linked to our billing account, but despite this, the keys all show ‘free tier’. We have validated everything we can, and it seems like we are seeing the same issue as some of these folks on this page: Confusion about adding billing to enable free tier - Gemini Apps Community
Verified:
Google project has billing linked, but new API keys all reflect “free tier” and billing cannot be changed. We have many projects and an active billing account, but nothing we do seems to change the “free tier” to a paid one.