No capacity avaialble on any model

I had stopped using Antigravity due to its arbitrary limit exhaustion, without usage. I had to come back to it for a brief report on my codebase, as I didn’t want to spend my Claude tokens. However, despite full model quota available across all models, I cannot use any of them, because capacity is not available.

{
  "error": {
    "code": 503,
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "domain": "cloudcode-pa.googleapis.com",
        "metadata": {
          "model": "gemini-3.1-pro-high"
        },
        "reason": "MODEL_CAPACITY_EXHAUSTED"
      }
    ],
    "message": "No capacity available for model gemini-3.1-pro-high on the server",
    "status": "UNAVAILABLE"
  }
}
{
  "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"
      }
    ],
    "message": "No capacity available for model gemini-3-flash-agent on the server",
    "status": "UNAVAILABLE"
  }
}

Shouldn’t Google first build capacity instead of rolling out access or charging people?

yup..