GET
/
backends
cURL
curl "https://api.ionq.co/v0.4/backends"
[
  {
    "backend": "qpu.aria-1",
    "status": "available",
    "degraded": true,
    "qubits": 25,
    "average_queue_time": 1181215,
    "last_updated": "2025-06-16T00:00:00Z",
    "characterization_id": "617a1f8b-59d4-435d-aa33-695433d7155e",
    "kw": 5.12345
  }
]
List all available backends including both QPUs and simulators. This shows each backend’s current status (available, unavailable, degraded), number of qubits, average queue time, and links to performance characterizations. Learn more about available backends.

Response

200 - application/json

Successfully retrieved backend.

The list of backends.