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QubitWire
THE PAST 7 DAYS

What changed in the evidence.

A record of meaningful updates, with the earlier assessment kept alongside the new one.

Only recorded changes to evidence, access or assessments appear as material updates. Initial records and unchanged reviews remain in each company’s history. Scores are compared only within the same methodology and sector.

  1. IonQ →

    1. 1 evidence source added · axis ratings unchanged

      Assessment reviewed 6 Sept 2026 · Research reviewed 7 Sept 2026
      What changed
      limitation
      PreviouslyThe selected application study combines simulation and hardware experiments, so its reported amortized benefit should not be read as universal quantum advantage.
      NowThe application study combines simulations and hardware. Reported gains depend on a chosen classical baseline and reusing a quantum-generated ordering across many solves; they do not establish a universal speed advantage.
      Research brief
      PreviouslyNone recorded
      NowInitial technology, access and evidence brief
      Evidence source
      PreviouslyNone recorded
      Nowhttps://docs.aws.amazon.com/braket/latest/developerguide/braket-devices.html
      Sources in this record (5)

  2. IBM Quantum →

    1. 1 evidence source added · axis ratings unchanged

      Assessment reviewed 6 Sept 2026 · Research reviewed 7 Sept 2026
      What changed
      limitation
      PreviouslyExploratory Nighthawk access and capabilities depend on plan and backend; a physics experiment does not establish commercial advantage across applications.
      NowAccess, calibration and dynamic-circuit support depend on the selected plan and backend. The reviewed physics experiment does not establish commercial advantage across applications.
      Research brief
      PreviouslyNone recorded
      NowInitial technology, access and evidence brief
      Evidence source
      PreviouslyNone recorded
      Nowhttps://quantum.cloud.ibm.com/docs/en/guides/processor-types
      Evidence claim: IBM Quantum Compute Service changelog
      Previouslyurl: https://quantum.cloud.ibm.com/docs/en/guides/changelog-quantum-compute-service; title: IBM Quantum Compute Service changelog; publishedAt: None recorded; claim: January 2026 entries document Nighthawk early access for Premium/Flex and Heron r3 access for paid plans; April entries add Heron r2 to Open Plan. August entries document platform improvements.; type: technical; independent:
      Nowurl: https://quantum.cloud.ibm.com/docs/en/guides/changelog-quantum-compute-service; title: IBM Quantum Compute Service changelog; publishedAt: None recorded; claim: IBM documents Open Plan Heron access and September 2026 Nighthawk r2 access for Premium, Flex and Pay-As-You-Go, including dynamic-circuit support on ibm_phoenix.; type: technical; independent:
      Sources in this record (4)