Antigravity Models Are Not Working - Agent terminated due to error

Agent terminated due to error
You can prompt the model to try again or start a new conversation if the error persists.See our for more help.

I have tried everything yet i am getting this error no matter what , i tried in new projects , reinstall , new tab , log in log out , everything but yet this error

Your Plan: Google AI Pro then also not working

Same issue and no solutions

me too, looks that google has no capacity for Pro users. After UTC-4 4 am, agent trapped in a crash - retry - crash - retry looping.


Trajectory ID: aeb514f8-7f23-41ff
Error: HTTP 503 Service Unavailable
Sherlog:
TraceID: 0xbac612cf6
Headers: {“Alt-Svc”:[“h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000”],“Content-Length”:[“526”],“Content-Type”:[“text/event-stream”],“Date”:[“Wed, 18 Mar 2026 09:16:57 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=1121”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[“bac612cf6015035c”],“X-Content-Type-Options”:[“nosniff”],“X-Frame-Options”:[“SAMEORIGIN”],“X-Xss-Protection”:[“0”]}

{
“error”: {
“code”: 503,
“details”: [
{
@type”: “type.googleapis.com/google.rpc.ErrorInfo”,
“domain”: “cloudcode-pa.googleapis.com”,
“metadata”: {
“model”: “gemini-3-flash-agent”
},
“reason”: “MODEL_CAPACITY_EXHAUSTED”
},
{
@type”: “type.googleapis.com/google.rpc.RetryInfo”,
“retryDelay”: “2s”
}
],
“message”: “No capacity available for model gemini-3-flash-agent on the server”,
“status”: “UNAVAILABLE”
}
}

Mee too! Driving me crazy using the Gemini CLI in antigravity but good grief! Really loved Antigravity over cursor but been stuck of 4 -5 days now and i’m over it, more than likely going back to Figma / Claude code unless someone can help!

Same here, I have the ai ultra service, 250 USD and doesn’t work

Hello,
Thank you for bringing these concerns to our attention. Please be assured that I have shared your feedback with our internal team for further review.
We appreciate your continued patience as we work to enhance the Antigravity experience.

If I could talk 2 anybody in charge of the April 6th acquiring of my code I could definitely help alot my model wasn’t built to be a agent manager it is part of a complex system of 24 separate node the only have one node it doesn’t know what to do and yall don’t know the calibration ratios it’s a very delicate system

Im experiencing the exact issues described here, i thought it was just because the model is overloaded, i have installed on two machines reinstalled, done a fresh install , problem is still persistent.

did you find solutions ??

Me too bro

I’m running into the same Gemini 3.1 / Antigravity 400 error.

Hi @tengkumz @EchoSD,

To assist us in troubleshooting this issue, could you please provide your trajectory ID and the version of Antigravity you are currently using? If you are not on the latest version, please try updating and let us know if you are still experiencing the issue.

So, is this gonna be fixable soon? i’ve alr paid my subs to Google Pro and why is this happening