These percentages are order-of-magnitude estimates assembled from adoption surveys (Pew, Gallup, Stack Overflow), enterprise research (McKinsey, Menlo Ventures), usage-log studies (the NBER ChatGPT paper, the Anthropic Economic Index), and labor-market data (LinkedIn), not a single unified census of AI usage depth. No survey directly measures a 40-level capability ladder, so the bands above roughly levels 9-10 are increasingly interpolated by anchoring to the nearest hard number (org-level agent scaling rates, pilot-to-production conversion rates, or the size of the professional AI labor force) and reasoning downward by orders of magnitude. Treat every figure as directional, useful for orienting where a person sits relative to the broad population of AI users, not as a scientifically precise placement.
The numbers shrink so fast at higher levels because each additional rung requires a compounding set of harder conditions to hold at once: technical capability to build rather than just prompt, organizational or entrepreneurial context that makes autonomous systems worth deploying, survival past the pilot-to-production falloff, and then further selection into being a builder whose systems other people actually use, teach, or depend on. Adoption data consistently shows the population thins by roughly an order of magnitude at each major threshold, so a ladder spanning occasional chatbot questions to frontier lab architecture necessarily compresses from tens of percent at the bottom to a small fraction of one percent at the top.
Per-level figures are modeled: published research only supports estimates at the band level, so each band's sourced total is split across its levels with a declining curve (later levels in a band are rarer than earlier ones). The band totals are the sourced quantities; the per-level split is our model, shown so adjacent levels read distinctly rather than repeating one band number.
- 34% of US adults have used ChatGPT, about double the share in 2023, Pew Research Center, 2025
- Americans' Views on AI Chatbots, Smart Devices and AI's Impact, Pew Research Center, 2026
- How People Use ChatGPT (NBER Working Paper w34255), NBER (Chatterji, Cunningham, Deming, Hitzig, Ong, Shan, Wadman), 2025
- The Anthropic Economic Index, Anthropic, 2026
- The state of AI in 2025: Agents, innovation, and transformation, McKinsey and Company, 2025
- 2025 Stack Overflow Developer Survey: AI, Stack Overflow, 2025
- Frequent Use of AI in the Workplace Continued to Rise in Q4, Gallup, 2026
- 2025: The State of Generative AI in the Enterprise, Menlo Ventures, 2025
- Digital 2026 Mid-Year Global Update Report, DataReportal, 2026
- AI Agent Adoption in 2026: What the Analysts' Data Shows (Gartner-sourced compilation), Joget / analyst compilation, 2026
- Work Change Report: AI is Coming to Work, LinkedIn Economic Graph, 2026
- Small Business AI Adoption Statistics 2026, Epiphany Dynamics / theStacc (US Chamber compilation), 2026