Leaders
Most accurate: Helios (Quantinuum) · not ranked last month
Error-corrected qubits: Helios (Quantinuum) · not ranked last month
Most qubits: Ytterbium atom array (Atom Computing) · not ranked last month
Fastest: Nighthawk r2 (IBM) · not ranked last month
Use it today: Nighthawk r2 (IBM) · not ranked last month
Most accurate: Helios (Quantinuum) · not ranked last month
Error-corrected qubits: Helios (Quantinuum) · not ranked last month
Most qubits: Ytterbium atom array (Atom Computing) · not ranked last month
Fastest: Nighthawk r2 (IBM) · not ranked last month
Use it today: Nighthawk r2 (IBM) · not ranked last month
Home › Rankings
Quantum computer rankings
5 races, each ranked on its own. There's no single "best quantum computer": a machine can lead on accuracy and trail on size. Every rank links to the published evidence on QubitBenchmark.
Data: QubitBenchmark release 2026-11.1 · first ranking · How we rank · How others rank them
Two-qubit gate fidelity
How often a two-qubit operation, the basic building block of a quantum program, works correctly. Higher is better.
- 1Helios Quantinuum99.92%
- 2H2 Quantinuum99.84%
- 3Willow Google99.67%
Full ranking →
Logical qubits demonstrated
Error-corrected ("logical") qubits are built from many physical qubits working together to catch and fix errors. Higher is better.
- 1Helios Quantinuum48
Full ranking →
Physical qubits, gate-based machines
The number of physical qubits in a gate-based quantum computer. Higher is better.
- 1Ytterbium atom array Atom Computing256
- 2Nighthawk r2 IBM120
- 3Willow Google105
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Circuit layer operations per second
CLOPS (circuit layer operations per second) measures how quickly a system can run layers of a standard test circuit, including the ordinary computing around it. Higher is better.
- 1Nighthawk r2 IBM2,000,000
- 2Heron r3 IBM340,000
Full ranking →
Largest machine on a public cloud
The largest gate-based quantum computer that anyone can use today through a public cloud service. Higher is better.
- 1Nighthawk r2 IBM120
- 2Helios Quantinuum98
- 3H2 Quantinuum56
Full ranking →
