Top web domains cited by LLMs 2025

Published by
Tiago Bianchi,
Aug 6, 2025

A June 2025 study found that Reddit was the most frequently cited web domain by large language models (LLMs). The platform was referenced in approximately 40 percent of the analyzed cases, likely due to the content licensing agreement between Google and Reddit in early 2024 for the purpose of AI models training. Wikipedia ranked second, being mentioned in roughly 26 percent of the times, while Google and YouTube were mentioned 23 percent.

Top web domains cited by large language models (LLMs) in June 2025

CharacteristicShare of web domains
reddit.com 40.11%
wikipedia.org 26.33%
youtube.com 23.52%
google.com 23.28%
yelp.com 21.01%
facebook.com 19.96%
amazon.com 18.72%
tripadvisor.com 12.46%
mapbox.com 11.29%
openstreetmap.com 11.29%
instagram.com 10.89%
mapquest.com 9.76%
walmart.com 9.32%
Showing entries 1 to 13 (20 entries in total)
Created with Highcharts 7.2.2Share of web domains40.11%40.11%26.33%26.33%23.52%23.52%23.28%23.28%21.01%21.01%19.96%19.96%18.72%18.72%12.46%12.46%11.29%11.29%11.29%11.29%10.89%10.89%9.76%9.76%9.32%9.32%7.74%7.74%5.9%5.9%4.6%4.6%4.56%4.56%4.4%4.4%4.33%4.33%4.22%4.22%reddit.comwikipedia.orgyoutube.comgoogle.comyelp.comfacebook.comamazon.comtripadvisor.commapbox.comopenstreetmap.cominstagram.commapquest.comwalmart.comebay.comlinkedin.comquora.comhomedepot.comyahoo.comtarget.compinterest.com
0%2.5%5%7.5%10%12.5%15%17.5%20%22.5%25%27.5%30%32.5%35%37.5%40%42.5%45%

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Semrush

Release date

June 2025

Region

Worldwide

Survey time period

Q1 2025

Special properties

across Google's AI Mode, AI overviews, ChatGPT and Perplexity

Supplementary notes

Based on 150 thousand citations from 5,000 randomly selected keywords from Semrush database.

Citation formats
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