How to verify ChatGPT statistics and research figures
A statistic from ChatGPT can sound authoritative, cite a real organization, and still be fabricated. Here's how to verify every number before it appears in your work.
Why ChatGPT produces these errors
Quantitative claims follow consistent patterns in text: 'According to [credible organization], [metric] was [number] in [year], representing [percentage change].' ChatGPT has learned these patterns so well that it can generate plausible-sounding statistics that match the research organization's typical subject matter and measurement style — without those numbers appearing in any actual report. The organization name is real; the figure is generated.
Impact if not caught
A fabricated statistic in marketing content, a published article, or a business presentation creates reputational and legal risk. Statistics are among the most-shared elements of online content, which means an inaccurate figure can propagate widely before it's caught.
Live example — what this looks like
The example below is an illustrative recreation of the type of error this AI commonly produces — not a transcript of an actual AI session.
What does recent research say about generative AI productivity gains for knowledge workers?
According to a 2024 McKinsey Global Institute report, companies with fully integrated generative AI workflows report an average productivity improvement of 34% for knowledge workers, with early adopters reporting gains of up to 51%. These figures are consistent across industries when AI is embedded in core task workflows.
Figure not found in source: McKinsey's published generative AI research does not contain a '34%' productivity figure for knowledge workers as stated. McKinsey's AI reports use different metrics and reported ranges that do not match this claim.
Verol highlights the specific claim and shows you what's wrong — automatically, before you finish reading.
How to verify statistics & research figures manually
Go to mckinsey.com/mgi (or the cited source) and search for the specific figure. Most major research firm reports are available for download or have publicly accessible summaries with the key numbers.
Paste the exact figure in quotes into Google alongside the source name. If the number is real and widely cited, it will appear across multiple independent publications.
Research firms use different definitions for 'knowledge worker,' 'productivity,' and 'integration.' Even if a report exists, confirm the definition used matches what ChatGPT described.
Or skip the manual steps — Verol does this automatically
Verol works in your browser alongside ChatGPT. It extracts every verifiable claim in the response and checks each one against primary sources in real time — before you finish reading. No extra steps, no copy-pasting.
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