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Quantum Inspire
quantuminspire.com/Quantum computecompute/quantum-inspireJSONcomparereport an errorprovider JSON
- Free allowance
- "Quantum Computing for everybody - Quick and free registration - Access to our hardware backends - Project storage - Hybrid classical-quantum computing." The hardware is described as "Currently, these are Tuna-5, Tuna-9 and Tuna-17.
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- emailno card, no phone
- Binding limit
- request-rate"You are not allowed to have more than 3 jobs in the queue for a hardware backend", and each hardware job waits behind calibration and other users, so throughput rather than total shots is the ceiling.
- Evidence
- documented6 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-22checked 2026-10-22 (live); stale on 2026-11-22
| Free tier | "Quantum Computing for everybody - Quick and free registration - Access to our hardware backends - Project storage - Hybrid classical-quantum computing." The hardware is described as "Currently, these are Tuna-5, Tuna-9 and Tuna-17. Tuna-5 has 5 transmons [...] Tuna-9 has 9 transmons [...] Tuna-17 has 17 transmons", alongside a 26-qubit QX emulator and a Rydberg neutral-atom emulator from TU Eindhoven. No card is asked for and no expiry is published. unit minutes; metered on wall-clock; perpetual-open-registration |
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| Price | none stated |
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| Limits | - request-rate (binding) "You are not allowed to have more than 3 jobs in the queue for a hardware backend", and each hardware job waits behind calibration and other users, so throughput rather than total shots is the ceiling. source
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| Identity | email not published |
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| Egress | not stated |
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| Interface | unknown inferred from the tooling the provider documents; not probed |
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| Tooling | not stated |
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| Composes with | Quantum Inspire is the one provider whose free tier is a physical device rather than a batch queue, so it composes with nothing: the 17-qubit machine cannot be used to prepare data for a GPU job, and the only chain available is the same account also using the emulator for circuit development before spending queue slots on hardware. |
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| Reliability | no reliability event recorded |
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| Notes | A university lab, TU Delft through QuTech, that issues accounts to email addresses with no institutional check and publishes no expiry, which is why this is the cleanest lane fit in the file for the identity question. A third-party comparison table lists QuTech as "free access" that "does not expire", which agrees with the vendor but is not the vendor speaking, so neither sentence is treated as a quota here. Two technical reliability facts from the FAQ matter more than the qubit count: the chips go offline for calibration and upgrades, which the backends page also shows by marking Spin-2+ as taken offline, and the FAQ warns that Chinese providers such as 163.com and qq.com bounce the confirmation mail often enough that users must write to support, which is a practical obstacle for an address on those domains rather than a veto. The free tier's shot allowance per job is not stated on the pages read, so no circuit-throughput figure is given. |
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| Parsed numbers | |
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Evidence 6
| date | source | what it proved |
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| 2026-10-22 | quantuminspire.com/ | "Quick and free registration - Access to our hardware backends", quoted |
| 2026-10-22 | www.quantum-inspire.com/ | backends described as semiconducting, superconducting and neutral atoms across multiple chips, quoted |
| 2026-10-22 | www.quantum-inspire.com/backends/ | "Currently, these are Tuna-5, Tuna-9 and Tuna-17. Tuna-5 has 5 transmons in a starfish configuration [...] Tuna-9 has 9 transmons [...] Tuna-17 has 17 transmons in a ninja-star configuration"; a 26-qubit QX emulator and a TU Eindhoven Rydberg neutral atom emulator are also listed; Spin-2+ is "taken offline", quoted |
| 2026-10-22 | quantuminspire.com/faq/ | "You are not allowed to have more than 3 jobs in the queue for a hardware backend, in order to provide equal access opportunities for everybody", quoted |
| 2026-10-22 | quantuminspire.com/faq/ | "a typical quantum-only job on a hardware backend takes 30 to 90 seconds"; "A hybrid job ... may take up to 15 minutes or longer to execute", quoted |
| 2026-10-22 | www.quantum-inspire.com/ | the platform is described as designed and built by QuTech, quoted |
More fields 1
| facets | {"class": "open-science-lab","free_tier_kind": "perpetual-open-registration","shape": {"vcpu": null,"ram_gib": null,"gpu_class": "superconducting transmon QPU, 17 qubits (Tuna-17)","gpu_count": 1}} |
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Unknown values 7
- egress metered: egress metering was not published
- egress terms: a source was read and is silent on this field
- interface: the access interface was not established
- per object cap stated: the field does not apply to this kind of offer
- reliability note: nothing of this kind was observed
- retention stated: the field does not apply to this kind of offer
- tooling: a source was read and is silent on this field