Compare · Quantum computers
Heron r3 vs Cepheus-1-108Q
RANKED BY PHYSICAL QUBITS ON AN OPERATIONAL SYSTEM
#4 VS #7
CHECKED 06 SEPT 2026
Side by side
Verdict
Heron r3 ranks #4 of 16 on Physical qubits on an operational system (156); Cepheus-1-108Q ranks #7 (108).
Rank 04 of 16 · leads
Physical qubits on an operational system
156
MakerIBM
Date2025
Verified04 Sept 2026
Evidence
IBM Quantum hardware page: Heron r2/r3 156 programmable qubits, EPLG 3.7E-3. IBM Newsroom 4 May 2026: median two-qubit error rate 1.17E-3. Condor (1,121 qubits, 2023) is not on the current available-QPU list.Rank 07 of 16
Physical qubits on an operational system
108
MakerRigetti
Date2026
Verified04 Sept 2026
Evidence
Rigetti What we build page: Cepheus-1-108Q deployed 7 April 2026, 108 qubits, two-qubit gate fidelity 99.1% (CZ).Try another pair
Source Vendor product pages and official announcements (Atom Computing AC1000, QuEra Gemini and Aquila, IBM Quantum hardware, Pasqal Orion Gamma…
Last checked 06 Sept 2026