Why do the reports disagree?

Reports on quantum technologies often give different figures for what sounds like the same thing. This page puts their estimates side by side with the year, the geography, what was counted, the population and the method, so that the reasons for a difference are visible. Estimates are never averaged, added up or reconciled into one figure; where comparability is unknown, the page says so.

MetricAll metricsInvestment in quantum companies, worldwideQuantum computing market or revenue, worldwidePublic funding commitments for quantum, worldwide, cumulativeQuantERA transnational calls: cumulative funding budget and projectsCountries with national quantum strategies or programmesQuantum programmes in national recovery and resilience plansQuantum share of public R&D project fundingUnited States share of funding to quantum companiesInternational quantum patent families by applicant locationDepth of company engagement with quantum computingLack of staff as a barrier to quantum computingCompanies without internal quantum computing skillsOccupations of quantum-related job postingsFounders of core quantum firms holding a PhDWorkforce of pure-play quantum companies, worldwideQuantum-engaged organisations, worldwideQuantum computers installed at national HPC centresItalian and international quantum scenario (Politecnico di Milano)

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Public funding commitments for quantum, worldwide, cumulative

Total amounts governments have announced for quantum research and innovation over several years.

Comparability: Announced commitments, not expenditure; totals rest on public announcements and may include multi-year and legacy budgets. 2 publishers. Read the definitions before comparing; no combined figure is given.

Public funding commitments for quantum, worldwide, cumulative: estimates side by side

Publisher and edition	Value as stated	Reference period and status	Geography	What was counted, and among whom	Method	Where in the source
OECD and European Patent Office December 2025 Republishes: QURECA (2025). Not an independent estimate.	an estimated USD 55.7 billion	2013-2025-07 (Estimate)	Worldwide	Quantum science and technology. Government commitments announced since 2013	Secondary figure: the report cites QURECA (2025); announcements may include legacy budgets and non-governmental money.	printed page 117, PDF page 117, 8.2 Government funding, Second column, first paragraph
Quantum Economic Development Consortium (QED-C), managed by SRI International Press release of 14 April 2026	an estimated $56.7 billion (USD billion)	end of 2025 (Estimate)	Worldwide	Quantum technologies. Public funding commitments announced worldwide	QED-C estimate; cumulative commitments, not disbursements; the public release does not describe the method.	Press release of 14 April 2026, Paragraph on public funding commitments

Why do the reports disagree? · Reports and figures · Market forecasts · Registered report sources · Approved evidence as JSON · Data sources and methods