The answer, I received from the Google billing support, is that you need to increase rate limit…
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You can easily check your rate limit in the ai studio setting, they are VERY generous and I doubt anyone here is hitting those limits. That’s just a generic response for Google. I promise they were having issues related to “Detected Issue has been detected involving increased quota errors for multiple models. Investigation is underway.” it is resolved now. Try again, things should work fine if your on a Paid Teir.
Same as everyone here, paid API key, billing active, no quota exceeded on the console but still get the “Quota exceeded. Please try again later.”
Adding a vertex AI key did not work…
I lost most of all the free trial credits with this bug 
.
I’ve escalated the issue to an internal team, seems to be a bug, not a configuration client-side problem. 
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Google Status page for AI Studio:
Mar 5, 2026
Increased error rates for model quota.
Resolved Issue has been resolved.
Mar 5, 00:00
No it hasn’t, at least for me. Is it working for anyone on this forum?
Also:
Mar 4, 2026
Increased error rates for model quota.
Detected Issue has been detected involving increased quota errors for multiple models. Investigation is underway.
Mar 4, 00:30
I’m not sure which of the issues reported is the one that is actually affecting people on this forum. Anybody with insider knowledge?
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O Well Guys! Sometimes its not rocket science.
- Clear your Cache or Try Ingonito mode
- Ensure your Quota is set to higher value than lower and monitor your spending
- Ensure only 1 key is currently in use, map that to your project
- Use Secrets section for mapping the key manually.
Done!
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Clearing the Cache worked! Thank you
Thank you - for 3 days I’ve been “working” with the rate limits and had to wait - I’m working in incognito right now! Great work!
>>> after 5-10 requests it stopped working again and in a new incognito session it won’t work again…I have paid API, only used in one project
>>> I’ve also cleared cache in Chrome and Firefox…after 2-3 requests it also stopped working again.
It worked, thank you!
I’m having the same issue and billing is active to on my account
Incognito worked for me for a couple of runs before it gave me the Quota error. I have reset the Chat settings to Free Tier and refreshed. It is working again. It is definitely on the Google side. Something happened yesterday, and coding is completely off. AI Studio is bringing teh app down by fixing it. It was OK a few days ago.
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Google has all the capital in the world and still cant figure this out - or how to communicate to paying customers. I hate Lovable but this never happened over there
Well then, perhaps you clear cache again 
It’s a bandaid solution that only works for a few requests.
This worked for me ! Many thanks
EDIT : Worked a couple of minutes…not stable
Same here… stuck with the error again.
Same here. stuck with quota error, even on paid API key.
100% quota exceeded now on tier 1 paid key. Anyone get feedbacks on when google think we can have a stability?
This isn’t working, I think a lot of the people trying this are ended up with Google AI Studio going back to the default “free” tier. For some reason that free tier doesn’t bump up against quota limits.
Free tier also not working, The first instruction already gave an error saying no quota available. They really fubbed