IBM ibm_boston vs Rigetti cepheus-1-108q

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
Rigetti cepheus-1-108q
Metriq · CC-BY-4.0
EPLG (error/layer) (lower better) 0.00153921 0.00204942
QAOA approx. ratio (higher better) 0.673396 0
QFT accuracy (higher better) 0 0.001
Captured: 2026-04-17 (ibm_boston) · 2026-08-05 (cepheus-1-108q). Full histories: ibm_boston · cepheus-1-108q · leaderboard.