Antigravity Models Are Not Working - Agent terminated due to error

Google Antigravity
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1

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

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Your Plan: Google AI Pro then also not working

4 Likes
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Same issue and no solutions

3

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.

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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”
}
}

4

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!

5

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

6

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.