Quantum Hardware Database
IBM Osprey
IBM Osprey more than tripled the qubit count of the previous Eagle processor, serving as an intermediate scaling step on the path to Condor's 1,000+ qubit milestone, and helping IBM validate manufacturing processes needed for even larger future devices.
Qubit Count
433
Qubit Type
Superconducting (fixed-frequency transmon qubits)
Architecture
Heavy-hex lattice
Released
2022
Gate Error (2Q)
~0.3–0.8% per two-qubit gate (at time of release)
Coherence Time
T₁ ~100–150 µs
Operating Temp
~15 millikelvin
Cloud Access
Yes — IBM Quantum (cloud.ibm.com)
Company
IBM
Connectivity
Heavy-hex — each qubit connects to 2 or 3 neighbors
Key Features
- More than 3x the qubit count of Eagle, the previous generation
- Continued validation of heavy-hex architecture at increasing scale
- Used for early large-scale error mitigation research
Limitations
- Gate fidelity not significantly improved over Eagle — scaling prioritized over quality at this stage
- Superseded by Condor's even larger qubit count the following year
Technical Notes
Osprey represented a deliberate 'scale first' step in IBM's roadmap, prioritizing demonstrating manufacturing scalability before later generations like Heron shifted focus back toward improving per-qubit gate fidelity.