Integrated AI evidence

Seven source groups, kept distinct by population, time and method. These static pages work without scripts.

Sources and coverage

Source	Published	Observed	Coverage	Limit
Microsoft AI Economy Institute	2025–2026 report series	H1 2025–Q2 2026; US Q1 2026	147 economies; 50 states + DC, 35 metros, 3,143 counties	Adjusted population telemetry and modeled local estimates. Usage is not proficiency or productivity.
Anthropic	26 June 2026	Geography: May 2026; output analysis: 10 Apr–10 Jun 2026	Claude chat and Cowork; country publication thresholds apply	Provider-specific conversations; classifier-inferred purpose. The per-capita index is not a user percentage.
European Commission JRC / Eurostat	JRC: 14 October 2026	2021–2025; Eurostat snapshot updated 15 June 2026	EU27; eligible enterprises with 10+ persons employed	Broad AI, not only GenAI. Strategic-sector coverage varies; the country map uses the broader enterprise series.
McKinsey	25 August 2026	4 May–8 June 2026	1,719 respondents across 97 countries	Self-reports, GDP weighting, non-census sample. Reported financial effects are not causal estimates.
Gallup / JFF / Families & Workers Fund	6 October 2026	26 January–24 March 2026	15,482 US employees; AI-effect questions: 7,845 AI users	Employee assessments; frequency and benefit questions have different bases. Job quality association is not causation.
HEPI / Kortext	12 March 2026	December 2025 for the 2026 edition	1,054 full-time UK undergraduates	Weighted self-report survey. Earlier waves differ; 2026 adds wellbeing uses. Tool provision is student-reported.
National Literacy Trust	18 August 2026	Early 2026; pupils and teachers January–March	40,543 pupils aged 13–18; 2,567 teachers; 3,073 parents	School recruitment; pupil sample largely England. Questions use different routed bases; findings are not national prevalence estimates.

Reuse and attribution

Microsoft AI Economy Institute. Microsoft source collection uses MIT; attribution retained.
Anthropic. June dataset documentation specifies CC-BY without a version; attribution retained. Report linked at source.
European Commission JRC / Eurostat. JRC report CC BY 4.0; Eurostat source and reuse terms linked.
McKinsey. Facts transcribed and charts redrawn; original report remains with publisher.
Gallup / JFF / Families & Workers Fund. Facts transcribed and charts redrawn; original remains with publisher.
HEPI / Kortext. Report supplied for this analysis; publisher PDF and data remain at source.
National Literacy Trust. Facts transcribed and charts redrawn; original reports remain with publisher.