Alice & Bob
Cat-qubit approach to hardware-level error protection.
Full Alice & Bob record →Head to head
Alice & Bob vs Quantinuum Helios
Alice & Bob (Alice & Bob) and Quantinuum Helios (Quantinuum) both sit in Quantum. Quantinuum Helios shipped more tracked changes in the last 30 days (6 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Alice & Bob Alice & Bob | Quantinuum Helios Quantinuum |
|---|---|---|
| Segment | Quantum | Quantum |
| Version | Boson 4 | Helios |
| Entry cost | Cloud + partnerships | Hardware-as-a-service / access via Nexus cloud or on-premise. Pricing is not published (contact sales). |
| Pricing tiers | — | — |
| Model stack | cat qubit | Guppy / TKET · Helios · Helios trapped-ion QPU |
| Context window | — | — |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 6 |
| Origin | EU | Global |
| Capabilities | Cat qubits, Bit-flip protection, Roadmap to 100 logical | 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 →