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!!!