IBM ibm_brussels vs IBM ibmq_cambridge

Side-by-side comparison over the metrics both devices report. Values come from different sources with different methodologies — mind the provenance badges; vendor-reported figures are manufacturer claims.

Metric IBM ibm_brussels
IBM · Apache-2.0
IBM ibmq_cambridge
IBM · Apache-2.0
Best 2Q fidelity (higher better) 0.996912 0.986066
Median 2Q error (lower better) 0.00861658 0.0280394
Median readout error (lower better) 0.0281982 0.065
Median T1 (µs) (higher better) 237.09 µs 80.861 µs
Median T2 (µs) (higher better) 136.17 µs 51.766 µs
Captured: 2026-04-17 (ibm_brussels) · 2020-07-16 (ibmq_cambridge). Full histories: ibm_brussels · ibmq_cambridge · leaderboard.