The 100 most cited domains in AI mode (2026 case study)

by PassGuy | Resources

Have you ever wondered how AI platforms like ChatGPT, Gemini, Perplexity, etc., get their answers? These AI tools draw data from websites and user-generated content platforms such as Wikipedia and Reddit.

Recent data from Ahrefs show that Google's AI mode primarily cites Wikipedia, YouTube, Google blogs, Reddit, and Google. Wikipedia is by far the most prevalent, appearing in over 1,1 million AI responses.

In this article, we will detail the complete list of the most cited domains in AI mode, as well as the total number of AI mentions and how to track AI-related citations.

Table of contents

The 100 most cited domains in AI mode in 2026

Here is a table showing the 100 websites most mentioned by AI, based on their frequency of appearance in AI-generated content.

wasWebsiteTotal number of AI mentions
1en.wikipedia.org11 35 007
2www.youtube.com9 61 938
3blog.google6 01 835
4www.reddit.com5 88 596
5www.google.com5 68 774
6www.amazon.com431 080
7www.quora.com360 239
8www.facebook.com3 38 391
9m.yelp.com2 46 155
10www.instagram.com2 15 144
11www.imdb.com1 63 224
12Great1 44 918
13www.linkedin.com1 39 177
14www.mapquest.com1 36 772
15www.walmart.com1 22 096
16www.britannica.com1 15 790
17www.healthline.com1 13 728
18www.yahoo.com1 06 770
19www.ebay.com1 02 697
20my.clevelandclinic.org99 680
21www.mayoclinic.org89 103
22www.webmd.com87 025
23www.pinterest.com84 926
24support.google.com79 057
25www.merriam-webster.com78 354
26www.tik tok.com76 213
27www.medicalnewstoday.com73 362
28pmc.ncbi.nlm.nih.gov73 276
29www.wikihow.com70 536
30study.com70 146
31www.indeed.com69 432
32www.espn.com68 391
33www.collinsdictionary.com66 547
34medium.com63 859
35www.etsy.com61 766
36www.businessinsider.com60 467
37www.nytimes.com60 340
38www.verywellhealth.com60 164
39www.target.com58 013
40www.dictionary.com56 852
41jouer.google.com53 741
42www.goodrx.com52 672
43www.homedepot.com52 335
44x.com51 535
45www.sciencedirect.com48 960
46www.nerdwallet.com45 357
47people.com45 056
48www.usatoday.com44 579
49www.forbes.com44 131
50simple.wikipedia.org43 091
51www.ncbi.nlm.nih.gov42 423
52medlineplus. gov42 286
53brainly.com42 266
54m.youtube.com41 206
55m.facebook.com41 055
56applications.apple.com40 658
57www.ebsco.com40 490
58www.investopedia.com40 462
59www.allrecipes.com38 808
60sports.yahoo.com37 782
61finance.yahoo.com37 283
62www.expedia.com37 168
63www.bankrate.com35 358
64www.vocabulary.com34 060
65dictionary.cambridge.org33 658
66www.cbsnews.com33 429
67Www.cnet.com33 379
68www.cnn.com32 373
69www.lowes.com30 965
70www.zillow.com30 624
71www.usnews.com30 405
72www.drogues.com30 391
73www.ziprecruiter.com30 172
74www.lemon8-app.com30 126
75www.eventbrite.com29 467
76www.cdc.gov29 283
77www.edmunds.com28 913
78www.today.com28 589
79www.kbb.com28 244
80www.yelp.com28 000
81library.fiveable.me27 510
82www.cnbc.com27 032
83www.caranddriver.com27 007
84www.rottentomatoes.com26 707
85www.bestbuy.com26 592
86www.justanswer.com26 502
87www.si.com26 341
88www.ign.com25 881
89www.thespruce.com25 261
90www.cbssports.com24 313
91all events.in23 725
92open.spotify.com23 712
93en.wiktionary.org23 420
94www.bbb.org23 148
95www.masterclass.com23 021
96www.bbc.com22 704
97www.thekitchn.com22 680
98I www.wikiwand.co22 354
99www.nordstrom.com22 150
100www.cars.com21 893

source: Ahrefs

The 10 most cited areas for AI in 2026 (Detailed analysis)

Here is a list of the 10 most frequently mentioned websites by AI platforms when answering questions, with an estimate of their monthly traffic and niche.

1. Wikipedia

Key indicatorEstimated value
Estimated monthly traffic 4,42 billion visits
Link to the websiteen.wikipedia.org
NicheGeneral knowledge, Encyclopedia

Wikipedia is the world's largest free online encyclopedia, open to contributions from anyone. Founded by Jimmy Wales and Larry Sanger in 2001, it has gained widespread popularity thanks to the reliability of its information on almost every subject. Wikipedia is also the sixth most visited website in the world.

2. YouTube

Key indicatorEstimated value
Estimated monthly traffic 48,6 billion visits
Link to the websitehttps://www.youtube.com 
NicheVideo sharing, entertainment, tutorials, video games, vlogs

YouTube is the world's largest video-sharing platform, free and accessible to everyone. Furthermore, YouTube is the most searched term on GoogleAs you read this, approximately 3,500 people have already searched for "YouTube" on Google, in the United States alone.

Launched in 2005 by Chad Hurley, Steve Chen and Jawed Karim, YouTube quickly became popular worldwide for its video content.

3. Google Blog

Key indicatorEstimated value
Estimated monthly traffic 38,98 million visits
Link to the websitehttps://blog.google 
NicheTechnology, Google updates

The Google blog is the official website run by Google that shares reliable technology news, announcements of new Google products, and industry trends on topics such as search algorithms and AI.

4.Reddit

Key indicatorEstimated value
Estimated monthly traffic 4,85 billion visits
Link to the websitehttps://www.reddit.com 
NicheSocial discussions, community Q&A

Reddit is the 4th most cited domain in AI Overviews and the most cited domain in ChatGPT Reddit, a popular platform for aggregating and discussing social news, allows users to share information, stories, opinions, and ideas within thousands of specialized communities.

Founded in 2005 by Steve Huffman and Alexis Ohanian, Reddit offers everyone the opportunity to participate by posting content or taking part in discussions on almost any topic.

5. Google

Key indicatorEstimated value
Estimated monthly traffic 4,9 billion visits
Link to the websitehttps://www.google.com 
Nichesearch

Google is the world's leading search engine. Users can find information, presentations on artificial intelligence, websites, and answers. Founded in 1998 by Larry Page and Sergey Brin, it became popular thanks to the speed and reliability of its search results.

6 Amazon

Key indicatorEstimated value
Estimated monthly traffic 682,4 million visits
Link to the websitehttps://www.amazon.com 
Nichee-commerce

Amazon is the world's largest online marketplace, where millions of products can be bought and sold. Founded in 1994 by Jeff Bezos, it quickly gained popularity thanks to its fast delivery and user-friendly website.

If you want to discover the e-commerce platforms that will experience strong growth in 2026, check out this article on the top-performing e-commerce startups here.

7.Quora

Key indicatorEstimated value
Estimated monthly traffic 298 million visits
Link to the websitehttps://www.quora.com 
NicheQuestions and answers

Quora is a popular question-and-answer website where anyone can ask questions and read answers from experts and regular users. Launched in 2009 by Adam D'Angelo and Charlie Cheever, it quickly became known for the relevance of the answers it provides to most questions.

8. Facebook

Key indicatorEstimated value
Estimated monthly traffic 5,2 billion visits
Link to the websitehttps://www.facebook.com 
NicheSocial media

Facebook is a popular social network that allows users to stay in touch with friends, share photos, and follow pages. Launched in 2004 by Mark Zuckerberg, it has become one of the most important online communication platforms.

9 Yelp

Key indicatorEstimated value
Estimated monthly traffic 183,9 million visits
Link to the websitehttps://www.yelp.com 
NicheLocal reviews

Yelp is a popular online review platform where users view and post reviews of local businesses, such as restaurants, shops, etc. Created in 2004 by Jeremy Stoppelman and Russel Simmons, it quickly gained popularity thanks to its authentic reviews written by real users.

10.Instagram

Key indicatorEstimated value
Estimated monthly traffic 5,9 billion visits
Link to the websitehttps://www.instagram.com 
NicheSocial media

Instagram is a popular social network for sharing photos and videos where anyone can post photos, Reels, and Stories. Launched in 2010 by Kevin Systrom and Mike Krieger, it became famous for its Reels, filters, and Stories.

How to track AI citations for a domain?

Tracking AI citations is complex without tools, as AI responses don't always cite their sources. That's why we use Semrush. This tool centralizes the tracking of domain mentions and visibility in AI search results. 

How to use Semrush to track AI citations?

Here is a simple, step-by-step tutorial on tracking AI citations using Semrush.  

Step 1: Log in to Semrush and check the AI ​​visibility

Once that's done, click on AI < Visibility Overview and enter your domain name, then click the "Check AI Visibility" button. 

Semrush AI - Most cited domains in AI mode

Step 2: Check your visibility score

Semrush's AI Visibility Tool will instantly provide you with an AI Visibility Score that measures how often your website appears in AI-generated responses on various topics.

Here you will find two options for tracking the visibility of your AI.

  • Mentions (Total number of prompts triggering AI responses that mention your brand)
  • Cited pages (Pages from your domain cited in the AI-generated responses)

Step 3: Find the missing topics

Scrolling down the page, you'll find the "Missing" tab under "Topics and Suggestions." This tab displays topics where your competitors are mentioned by AI, but not your domain, highlighting significant content gaps that need to be filled.

Final words

Wikipedia tops the list of most cited domains in AI mode with an impressive 1,135,007 citations. This clearly demonstrates the importance for AI platforms of relying on credible and community-validated sources to obtain their answers.

As AI continues to evolve, community platforms like Wikipedia, YouTube, Reddit, Quora, etc., are becoming key sources that help AI learn from real human knowledge.

What do you think of AI quotes? Share your opinion in the comments. 

FAQ

Here are some frequently asked questions about the areas mentioned in AI.

How to position yourself in Google's overall AI ranking?

Create helpful content that directly answers user questions to achieve a good ranking in AI previews.

What are the most frequently cited areas in Google's presentations on AI?

Wikipedia, YouTube, the Google blog, Reddit, and Google are the most cited sources in presentations of Google's AI.

What is the number 1 field in AI?

Wikipedia often appears at the top of rankings of AI platforms such as ChatGPT, Perplexity, Gemini, etc.

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