There is no evidence-based winner on the information available here. Rigetti and D-Wave are pursuing different quantum-computing architectures, and their reported commercial and financial measures are not directly comparable. As of October 7, 2026, the cited disclosures show reasons investors might investigate either company, but they do not establish which stock is cheaper or offers the better risk-adjusted return. That judgment requires current share prices, valuation data, and assumptions about execution and risk.
How do Rigetti and D-Wave differ?
The clearest distinction is their technology and the products each company emphasizes. Rigetti focuses on superconducting gate-model quantum processors and an integrated approach that spans chip design and fabrication through cloud access. D-Wave’s established commercial offering centers on quantum annealing; it also has a gate-model effort. The two approaches should not be treated as interchangeable simply because both are described as quantum computing.
| Comparison | Rigetti Computing | D-Wave Quantum |
|---|---|---|
| Primary commercial emphasis | Superconducting gate-model systems and cloud access. Rigetti’s Q1 2026 Form 10-Q | Annealing systems, software, and services through its Leap cloud service. D-Wave’s FY2025 Form 10-K |
| System described in the cited filing | Cepheus-1-108Q, a 108-qubit system made of twelve connected nine-qubit chiplets, was described as generally available through Rigetti Quantum Cloud Services, Amazon Braket, Microsoft Azure Quantum, and qBraid. The filing’s reported gate-fidelity figures are based on Rigetti’s internal testing, not independent benchmarks. Rigetti’s Q1 2026 Form 10-Q | Advantage2 was described in the FY2025 filing as D-Wave’s current sixth-generation annealing system. D-Wave also has a gate-model effort, expanded through its completed Quantum Circuits acquisition. D-Wave’s FY2025 Form 10-K; D-Wave’s FY2025 results |
| Future milestones | Rigetti’s Q2 2026 release discusses technology development and broader on-premises deployments; the cited material does not establish a specific future qubit-count target here. Rigetti’s Q2 2026 results | D-Wave’s Q2 release set roadmap targets for a 20,000-qubit annealing system in 2029 and 100,000 qubits by 2031, alongside gate-model milestones. These are company targets, not completed capabilities. D-Wave’s Q2 2026 results |
Qubit count alone does not establish useful performance or quantum advantage. In particular, Rigetti’s cited fidelity claims are company-reported internal test results; they should not be read as independent verification of system performance.
What do the latest reported results say about commercial demand?
Revenue is money recognized for a reporting period. Bookings and remaining performance obligations describe other stages or measures of commercial activity; they are not revenue, profit, or proof that future sales will recur. The periods below differ, so they do not provide a like-for-like growth comparison.
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| Measure | Company-reported result | How to interpret it |
|---|---|---|
| Rigetti revenue | $5.1 million for the quarter ended June 30, 2026. Rigetti Q2 2026 results | Recognized quarterly revenue; the figure alone does not show profitability or establish a recurring revenue base. |
| D-Wave revenue | $24.6 million for fiscal 2025, up from $8.8 million for fiscal 2024; both fiscal years ended December 31. D-Wave FY2025 results | Annual revenue from a different reporting period; do not compare it directly with Rigetti’s quarterly figure as if the periods matched. |
| D-Wave bookings and obligations | First-half 2026 bookings were $35.5 million, versus $2.9 million in first-half 2025. Remaining performance obligations were $40.7 million, up 668% year over year. The company said production revenue was 37.3% of total QCaaS revenue. D-Wave Q2 2026 results | Bookings and obligations are not recognized revenue. The production-revenue share is a proportion of D-Wave’s QCaaS revenue, not its total revenue. |
| Rigetti system order | Rigetti’s Q1 2026 filing described an $8.4 million purchase order from Rigetti Computing India for a 108-qubit system for C-DAC. Deployment in the second half of 2026 was an expectation in that filing, not a confirmed completion. Rigetti’s Q1 2026 Form 10-Q | A named order is commercial evidence, but its importance to future revenue depends on delivery and recognition under the applicable accounting terms. |
How do their losses and liquidity compare?
Rigetti reported a substantial cash and investment balance alongside large quarterly losses. That combination may give it resources to fund operations and development, but it does not make the business profitable or remove financing and execution risk.
- For the quarter ended June 30, 2026, Rigetti reported a $28.1 million operating loss, a $52.6 million GAAP net loss, and a $16.0 million non-GAAP net loss.
- At June 30, 2026, it reported $541.3 million in cash, cash equivalents, and available-for-sale investments, and no debt.
These figures come from Rigetti’s Q2 2026 results. The cited materials do not provide a same-date D-Wave liquidity figure for a direct comparison, so they do not support a conclusion that one company has the stronger balance sheet overall.
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What would make one stock a better buy?
A company’s technology, sales progress, and cash position matter to an investment case, but none determines whether its shares are attractive at a particular price. The cited disclosures do not establish contemporaneous share prices, market capitalizations, or valuation multiples. Without those inputs, a “better buy” ranking would confuse business prospects with the price investors are being asked to pay.
- Compare valuation using current data. Check each company’s share price, market capitalization, and relevant valuation measures on the same date. For loss-making companies, earnings-based measures may not be meaningful; explain which alternative measure is being used and its limitations.
- Separate commercial signals. For Rigetti, track whether orders convert into completed deployments and recognized revenue. For D-Wave, track whether bookings and obligations convert into revenue and whether production use grows. Neither bookings nor an order by itself establishes durable, profitable demand.
- Assess execution against what is already available. Distinguish systems described as available in company filings from future roadmap targets. Treat roadmap dates as uncertain until milestones are delivered.
- Match the risk to your circumstances. Consider your time horizon, ability to tolerate losses, portfolio concentration, and willingness to accept the possibility of delays, further funding needs, or dilution. This is a framework for analysis, not a personalized recommendation.
What are the main risks for investors?
Both companies operate in an early commercial market, where technical progress and customer interest have yet to establish the scale or economics of a mature business. Investors should account for risks that reported milestones alone cannot resolve:
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- Technology and adoption: development may take longer than expected, and customer demand may not translate into sustained use or useful commercial outcomes.
- Execution: system deployments, product development, and roadmap milestones can be delayed or fail to meet company expectations.
- Financing and dilution: continuing losses can create a need for additional capital; new financing could dilute existing shareholders.
- Comparability: the companies use different architectures and report different financial measures and periods. A larger qubit count or a sharp increase in bookings is not, by itself, evidence of superior investment performance.
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