A quantum computer has no single price tag. The cost splits into two separate questions: what you pay to rent time on someone else's machine, and what you pay to own one. The numbers span four orders of magnitude, from free to tens of millions of dollars, and the spread confuses most people who ask.
Renting cloud time
Most teams never buy a quantum computer. They rent QPU time through a cloud platform the same way they rent servers.
- IBM Quantum Open Plan: 10 minutes of QPU time per 28-day window, free
- IBM Pay-As-You-Go: $96, $72, or $48 per minute depending on machine
- AWS Braket on Rigetti hardware: about $0.000425 per shot, so a 10,000-shot circuit costs roughly $4.55
- Quantinuum on Azure: reported at $125,000 or more per month for reserved capacity
For most learners the free tiers are enough. See IBM Quantum Free Tier: What You Get in 2026 and the getting started guide.
Buying a machine
Ownership prices are usually under NDA, but public sales and vendor hints give a range.
- SpinQ desktop teaching unit: around $5,000
- Rigetti Novera 9-qubit QPU: around $2.85 million
- D-Wave Advantage2 annealer: around $20 million
Add facility and operations, and a full on-site installation lands in the tens of millions. This is why EY's on-site quantum computer reads as a capital investment rather than a purchase.
What the money buys
The hardware is a small part of the total. A superconducting machine needs a dilution refrigerator running at 10 millikelvin, helium-3 for the cooling loop, microwave control electronics, vibration isolation, electromagnetic shielding, and clean power. Operating it takes 3 to 8 specialist staff plus ongoing cryostat maintenance and helium management. The full cost breakdown sits in What's Inside a Quantum Computer.
Why cloud wins for almost everyone
The math favors renting. A $20 million machine that runs one job at a time, booked at $96 per minute, needs heavy sustained usage to pay back its purchase price, facility, and staff. For a research group or a company testing one use case, per-shot or per-minute pricing is cheaper and faster to start. Owning makes sense only for a national lab, a hyperscaler, or a company running quantum jobs as a core production workload.
What you pay per real computation
Per-shot pricing hides a detail: one useful result usually needs many shots. A variational algorithm runs the same circuit thousands of times. Shot count, not circuit count, sets your bill. The guide on cutting shot count by 80% covers how to keep that bill down.
Bottom line
Start at $0 with the free tiers. Move to per-shot cloud pricing when you need real hardware. Consider ownership only when sustained usage justifies a multi-million dollar capital expense. For most readers the answer to "how much does a quantum computer cost" is the free tier you use first.