Google AI Ultra for Business has serious issues with antigravity

Google AI Ultra for Business cannot use the Claude model in Antigravity because it consistently displays the following error log: Trajectory ID: 140b453e-d777-4 Error: HTTP 503 Service Unavailable
Sherlog:
TraceID: 0x52149cc
Headers: {“Alt-Svc”:[“h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000”],“Content-Length”:[“429”],“Content-Type”:[“text/event-stream”],“Date”:[“Sat, 14 Mar 2026 01:38:40”] GMT"],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=2039”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:["52149cccfc685044 "],“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”: “claude-opus-4-6-thinking”
},
“reason”: “MODEL_CAPACITY_EXHAUSTED”

}
],
“message”: “No capacity available for model claude-opus-4-6-thinking on the server”,

“status”: “UNAVAILABLE”

}
} Google AI Ultra, which is for personal accounts and home groups, doesn’t have this problem, but enterprise accounts keep getting this message? This is unfair, it shouldn’t be like this!!!

So true, when I purchased google one AI ultra it got resolved. Google AI Ultra for Business has some majore capacity issue