Hello , im on ultra plan paying $250 / month facing this issue on claude opus 4.6 with no explaination,
Agent terminated due to error
You can prompt the model to try again or start a new conversation if the error persists.
debug info
“Trajectory ID: 50e7c942-d287-46c9-b1b1-00a36741d…
Error: HTTP 503 Service Unavailable
Sherlog:
TraceID: 0xe2dfebf7d33ce…
Headers: {“Alt-Svc”:[“h3=”:443”; ma=2592000,h3-29=“:443”; ma=2592000"],“Content-Length”:[“429”],“Content-Type”:[“text/event-stream”],“Date”:[“Mon, 18 May 2026 12:25:36 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=1952”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[“e2dfebf7d33cef4d”],“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”
}
}"