223 answers from 9 AI assistants to the same 25 general knowledge questions, asked in English from the United Kingdom. Wikipedia was cited in 38 of 223 answers (17%).
Key figures
Google AI Overviews: 12 of 23 answers (52%).
Perplexity: 11 of 25 (44%).
No answers citing Wikipedia: ChatGPT, Claude, DeepSeek, Sarvam.
Most cited instead: britannica.com (13), guides.library.ucla.edu (8), youtube.com (8).
By assistant
Assistant
Answers
Citing Wikipedia
Share
Google AI Overviews
23
12
52%
Perplexity
25
11
44%
Meta AI
25
6
24%
Google AI Mode
25
6
24%
Gemini
25
3
12%
ChatGPT
25
0
0%
Claude
25
0
0%
DeepSeek
25
0
0%
Sarvam
25
0
0%
Websites cited when Wikipedia was not
Website
Answers
britannica.com
13
guides.library.ucla.edu
8
youtube.com
8
encyclopedia.com
8
google.com
7
refseek.com
6
guides.library.cornell.edu
5
library.sjsu.edu
5
libguides.usc.edu
5
reputationx.com
5
Method
Business tracked: wikipedia.org, as an independent example. Competitors for comparison: britannica.com, bbc.co.uk, nhs.uk.
25 general knowledge questions, asked once of each assistant on 13 October 2026, English, United Kingdom.
Assistants: Google AI Overviews, Perplexity, Meta AI, Google AI Mode, Gemini, ChatGPT, Claude, DeepSeek, Sarvam. Google AI Overviews returned an overview for 23 of 25 questions.
An answer counts as citing Wikipedia when any source link it gives is on wikipedia.org or a subdomain.
Answers change from one ask to the next. This is one check; the live figures update weekly in the sample source map.
