IBM ibm_boston vs IBM ibmqx2

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_boston
IBM · Apache-2.0
IBM ibmqx2
IBM · Apache-2.0
Best 2Q fidelity (higher better) 0.999345 0.984142
Median 2Q error (lower better) 0.00127713 0.0214228
Median readout error (lower better) 0.00512695 0.0633
Median T1 (µs) (higher better) 292.44 µs 48.234 µs
Median T2 (µs) (higher better) 352.97 µs 24.545 µs
Captured: 2026-04-17 (ibm_boston) · 2021-03-15 (ibmqx2). Full histories: ibm_boston · ibmqx2 · leaderboard.