IBM ibm_berlin vs IBM ibmq_valencia

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_berlin
IBM · Apache-2.0
IBM ibmq_valencia
IBM · Apache-2.0
Best 2Q fidelity (higher better) 0.999479 0.992675
Median 2Q error (lower better) 0.0021133 0.0104883
Median readout error (lower better) 0.020752 0.0348
Median T1 (µs) (higher better) 323.82 µs 101.76 µs
Median T2 (µs) (higher better) 248.44 µs 49.158 µs
Captured: 2026-04-17 (ibm_berlin) · 2021-01-20 (ibmq_valencia). Full histories: ibm_berlin · ibmq_valencia · leaderboard.