Willow
The chip behind below-threshold error correction and verifiable quantum advantage claims.
Full Willow record →Head to head
Willow vs Quantinuum Helios
Willow (Google Quantum AI) and Quantinuum Helios (Quantinuum) both sit in Quantum. Quantinuum Helios shipped more tracked changes in the last 30 days (6 vs 3). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Willow Google Quantum AI | Quantinuum Helios Quantinuum |
|---|---|---|
| Segment | Quantum | Quantum |
| Version | Willow | Helios |
| Entry cost | Early access / research chip. Pricing is not publicly listed. | Hardware-as-a-service / access via Nexus cloud or on-premise. Pricing is not published (contact sales). |
| Pricing tiers | Early Access Program free | — |
| Model stack | undisclosed | Guppy / TKET · Helios · Helios trapped-ion QPU |
| Context window | — | — |
| Public API | ||
| Routes models | ||
| Changes / 30d | 3 | 6 |
| Origin | United States | Global |
| Capabilities | Below-threshold error correction, 105 qubits, Quantum Echoes benchmark, quantum computing, superconducting qubits, neutral atom quantum computers, Quantum Processor, Superconducting Quantum Computing | all-to-all connectivity, 99.9%+ 2Q fidelity, real-time conditional logic, Hardware-as-a-Service, On-premise access, Cloud access, 99.921% Two-qubit gate fidelity, 99.921% two-qubit gate fidelity |
Quantinuum Helios
Highest published two-qubit fidelities, all-to-all connectivity, real-time classical control.
Full Quantinuum Helios record →