Qiskit
The most widely used circuit construction, transpilation and primitives library.
Full Qiskit record →Head to head
Qiskit (IBM) and Google Quantum AI (Google) both sit in Quantum. Google Quantum AI shipped more tracked changes in the last 30 days (8 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Qiskit IBM | Google Quantum AI |
|---|---|---|
| Segment | Quantum | Quantum |
| Version | 2.5.2 | Cirq |
| Entry cost | Free and open-source SDK | Free and open-source library |
| Pricing tiers | Open Source free | Cirq Open Source Library free |
| Model stack | Rust transpiler core | Cirq · Willow · Willow QPU |
| Context window | — | — |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 8 |
| Origin | Global | Global |
| Capabilities | Rust-accelerated transpiler, primitives V2, circuit library, OpenQASM 3, quantum circuit building, transpilation and optimization, error mitigation and suppression, heterogeneous orchestration | 105 physical qubits, below-threshold error correction, Cirq toolchain, Quantum programming framework, Quantum circuit simulation, Noise modeling and experiments, Quantum Virtual Machine, Open source Python library |
The most widely used circuit construction, transpilation and primitives library.
Full Qiskit record →Below-threshold error correction demonstrated on the 105-qubit Willow chip.
Full Google Quantum AI record →