B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
56%
56% -- ungrounded correct answer share for Google AI Overviews (2026)
56% of correct Google AI Overview answers were ungrounded (cited sources did not fully support them) after the Gemini 3 upgrade.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
56%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
New York Times / Oumi
Primary
Tier B
https://www.qwestyon.com/blog/the-top-10-hilarious-and-dangerous-mistakes-from-google-s-new-ai-overv… ↗
Source Article
Google AI Overview Fails: Funniest & Most Dangerous (2026) | Qwestyon
Google AI Overview Fails: The 2026 Ultimate Guide (Glue on Pizza to Million-Error Hours)
In May 2024, Google switched on AI Overviews — the AI-written summaries that now sit at the very top of search results, above the famous ten blue links. Within days, it was confidently telling people to glue the…
Original Research
New York Times / Oumi
· Original study ↗
Methodology
Reported by New York Times and Oumi, 2026; after Gemini 3 upgrade
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google AI Overviews: 56% ungrounded correct answer share. Source: New York Times / Oumi (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/google-ai-overview-ungrounded-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/google-ai-overview-ungrounded-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>56%</strong> -- ungrounded correct answer share for Google AI Overviews<br><small>Source: New York Times / Oumi (2026) · <a href="https://lighthousedata.io/data/google-ai-overview-ungrounded-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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