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ibm_miami (Nighthawk r1)

Name: ibm_miami (Nighthawk r1) specifications
Creator: QPU137

ibm_miami (Nighthawk r1) is a superconducting gate-based processor by IBM with 120 qubits (2025). Below: every publicly disclosed figure with its source, method, and vendor-claim status — plus what is not disclosed, recorded as findings.

Data as of 2026-08-19Compile a circuit for this class of device Compare

Measurement records6 disclosed · 3 not disclosed · 2 sources

Select a figure to open its record

Qubit count (qubit_count_physical)120 qubitsvendor claim

Vendor claim

Source: IBM Quantum Platform - Compute resources table (also IBM Newsroom press release, 2025-11-12)
Method: VENDOR_UNSPECIFIED
Notes: 218 tunable couplers; press release states architecture supports circuits with 'up to 5,000 two-qubit gates' (vendor claim, no method stated), with roadmap to 7,500 (2026), 10,000 (2027), 15,000 (2028)
Citation key: [ibm/ibm-miami:qubit-count-physical:2026-08-19]

Two-qubit gate quality (two_qubit_gate_error_best)8.61E-4vendor claim

Vendor claim

Source: IBM Quantum Platform - Compute resources table · published 2026-08-19
Method: IBM docs: 'lowest two-qubit error on any edge of the device'
Aggregation: best (lowest single edge)
Notes: Live calibration snapshot as displayed 2026-08-19. Sibling ibm_berlin showed 6.28E-4 best / 5.14E-3 layered the same day.
Citation key: [ibm/ibm-miami:two-qubit-gate-error-bes:2026-08-19]

Two-qubit gate quality (two_qubit_gate_error_layered_EPLG)9.69E-3vendor claim

Vendor claim

Source: IBM Quantum Platform - Compute resources table · published 2026-08-19
Method: EPLG in a 100-qubit chain, EPLG_100 = 4/5(1-LF^(1/99)) per IBM docs
Aggregation: layered, 100-qubit chain (EPLG_100)
Notes: Live snapshot 2026-08-19; early-access device, notably higher layered error than Heron r3 siblings at same date
Citation key: [ibm/ibm-miami:two-qubit-gate-error-lay:2026-08-19]

Readout (readout_error)1.898E-2vendor claim

Vendor claim

Source: IBM Quantum Platform - Compute resources table · published 2026-08-19
Method: VENDOR_UNSPECIFIED
Aggregation: median
Notes: Live snapshot 2026-08-19
Citation key: [ibm/ibm-miami:readout-error:2026-08-19]

Throughput (CLOPS)24K circuit layer operations per secondvendor claim

Vendor claim

Source: IBM Quantum Platform - Compute resources table · published 2026-08-19
Method: layers of a 100x100 hardware-aware circuit per unit time (IBM docs definition)
Notes: Live snapshot 2026-08-19 (ibm_berlin: 25K)
Citation key: [ibm/ibm-miami:clops:2026-08-19]

Single-qubit gate quality (one_qubit_gate_error)not publicly disclosed

Not publicly disclosed — checked 2026-08-19

Finding: No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
Sources queried: quantum.cloud.ibm.com/computers?view=table; IBM Newsroom 2025-11-12 release; IBM 'What's new Q4' blog
Notes: Not shown on public fleet table or press materials

Coherence (T1_T2_coherence)not publicly disclosed

Not publicly disclosed — checked 2026-08-19

Finding: No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
Sources queried: quantum.cloud.ibm.com/computers?view=table; ibm.com/quantum/blog/whats-new-q4-2025; newsroom.ibm.com 2025-11-12 release
Notes: IBM 'What's new at IBM Quantum - Q4' blog claims 'record-breaking coherence' for Nighthawk but publishes no numbers (https://www.ibm.com/quantum/blog/whats-new-q4-2025)

Gate duration (two_qubit_gate_duration)not publicly disclosed

Not publicly disclosed — checked 2026-08-19

Finding: No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
Sources queried: quantum.cloud.ibm.com fleet/system pages; IBM Newsroom release; web search

Pricing model (availability_and_pricing_model)Online, us-east; early access for Premium and Flex plans since January 2026 ('Premium and Flex Plans now have early access to ibm_miami, the first IBM Quantum Nighthawk QPU')vendor claim

Vendor claim

Source: IBM Quantum Compute Service changelog · published 2026-01
Method: VENDOR_UNSPECIFIED
Notes: Unveiled 2025-11-12; press release said 'expected to be delivered to IBM users by the end of 2025'. Pricing model exists (Open/Pay-As-You-Go/Flex/Premium/On-Prem) per quantum.cloud.ibm.com/docs/en/guides/plans-overview
Citation key: [ibm/ibm-miami:availability-and-pricing:2026-08-19]

Topology

square-lattice — 120 qubits linked by 218 next-generation tunable couplers to their four nearest neighbors in a square lattice — 'an increase of over 20 percent more couplers compared to IBM Quantum Heron' (IBM press release, 2025-11-12). IBM docs call it a 'grid topology'.

SOURCE: IBM Delivers New Quantum Processors, Software, and Algorithm Breakthroughs on Path to Advantage and Fault Tolerance (IBM Newsroom)

Native gate set

1q RZ · SX · X · ID · RX (fractional)
2q CZ · RZZ (fractional)

SOURCE: QPU information - IBM Quantum Documentation (gates listed jointly for Heron and Nighthawk families)

Cloud access

IBM Quantum Platform (quantum.cloud.ibm.com), us-east region (ibm_berlin is the eu-de Nighthawk sibling)

Corrections

Found an error in this data? Report it — every report is logged publicly, whether or not it turns out to be right.

QPU137 is independent and is not affiliated with, endorsed by, or sponsored by IBM. Figures above are public disclosures recorded with their sources on 2026-08-19; vendor claims are labeled as such and may not be directly comparable across measurement methods — see methodology.