The 50 Most-Cited Websites in ChatGPT (September 2026)

When ChatGPT answers a question, it pulls from a relatively small set of trusted sources. We tracked every domain ChatGPT cited across a broad set of US queries, then ranked them by mention share — the percentage of all citations (among the top sources) that point to each domain. The leader is www.reddit.com, capturing 16.8% of citations. We update this every month.

Mention share = a domain’s citations as a percentage of the summed citations of the top sources. Data via Ahrefs Brand Radar · United States, all topics · September 2026.

The 50 most-cited websites in ChatGPT

#	Website	Mention share	vs last month	Pages cited	DR
1	www.reddit.com	16.8%	–	810,887	95
2	en.wikipedia.org	7.0%	–	129,667	97
3	www.consumerreports.org	3.7%	▲ 1	36,674	90
4	www.forbes.com	3.1%	▲ 1	36,505	94
5	engineerfix.com	2.8%	▲ 3	93,427	59
6	legalclarity.org	2.8%	▲ 1	72,741	76
7	www.healthline.com	2.5%	▲ 2	16,502	92
8	www.youtube.com	2.5%	▲ 7	114,596	99
9	pmc.ncbi.nlm.nih.gov	2.4%	▲ 8	69,801	95
10	www.walmart.com	2.3%	▲ 1	144,045	92
11	www.tomsguide.com	2.1%	▲ 2	17,028	87
12	www.merriam-webster.com	2.1%	▼ 9	51,009	91
13	www.techradar.com	2.1%	▲ 3	21,593	91
14	www.edmunds.com	1.9%	–	68,539	86
15	www.homedepot.com	1.9%	▲ 6	87,955	90
16	www.goodhousekeeping.com	1.8%	▲ 3	7,111	90
17	pubmed.ncbi.nlm.nih.gov	1.8%	▲ 13	79,568	95
18	www.target.com	1.8%	–	93,202	91
19	dictionary.cambridge.org	1.6%	▼ 13	68,370	92
20	www.lowes.com	1.6%	▲ 3	63,203	88
21	www.tripadvisor.com	1.5%	▲ 8	86,492	93
22	www.trustpilot.com	1.5%	▲ 14	42,907	94
23	www.angi.com	1.4%	▲ 3	12,832	90
24	www.caranddriver.com	1.4%	▲ 3	15,340	86
25	www.kbb.com	1.4%	▼ 3	68,067	89
26	www.facebook.com	1.4%	▲ 16	56,710	100
27	www.cars.com	1.4%	▼ 2	41,838	85
28	www.nerdwallet.com	1.3%	–	18,238	90
29	www.fda.gov	1.3%	NEW	10,983	93
30	www.sciencedirect.com	1.3%	▲ 2	48,897	94
31	scienceinsights.org	1.2%	▼ 7	17,897	70
32	www.bbb.org	1.2%	▲ 15	80,804	93
33	health.clevelandclinic.org	1.2%	▲ 1	4,034	92
34	www.dictionary.com	1.2%	▼ 24	27,640	90
35	www.mayoclinic.org	1.2%	▲ 9	8,731	92
36	www.wired.com	1.2%	▲ 7	11,059	92
37	www.rtings.com	1.1%	NEW	21,488	78
38	www.linkedin.com	1.1%	▼ 3	46,530	99
39	www.vogue.com	1.1%	▼ 6	12,942	91
40	medlineplus.gov	1.1%	▲ 5	6,944	91
41	www.bobvila.com	1.1%	–	4,924	85
42	www.jdpower.com	1.1%	▼ 5	21,910	87
43	apps.apple.com	1.1%	▼ 5	55,594	97
44	www.thisoldhouse.com	1.1%	▼ 4	4,767	86
45	www.collinsdictionary.com	1.0%	▼ 33	43,363	86
46	my.clevelandclinic.org	1.0%	▲ 3	6,929	92
47	www.cdc.gov	0.9%	NEW	7,212	94
48	www.allure.com	0.9%	NEW	8,300	87
49	www.whowhatwear.com	0.9%	NEW	11,785	84
50	www.motortrend.com	0.8%	▼ 2	11,923	84

Mention share = a domain’s citations as a percentage of the summed citations of these top sources. Pages cited = the number of distinct pages on the domain that were cited. DR = Ahrefs Domain Rating. Data: broad US queries, September 2026.

How this data is collected

The numbers come from Ahrefs’ Brand Radar, which tracks the responses AI platforms give to a large, search-backed set of real user queries. For this article, we looked at every domain ChatGPT cited across a broad sample of US queries spanning all topics, then counted how often each domain appeared as a source.

This article is generated and automatically kept up to date every month by Agent A, our AI agent. Each month it pulls the latest Brand Radar data, recalculates mention share and rank movement, and refreshes the chart and table above — so the figures always reflect the most recent snapshot.

Use Ahrefs’ Brand Radar to track your brand’s presence in ChatGPT

To track your brand’s presence in ChatGPT, you’ll have to use a tool like Ahrefs’ Brand Radar.

Enter your brand, go to AI responses, select ChatGPT, and you’ll see the queries your brand appears for.

To see how you’re comparing against your competitors in ChatGPT, enter their brands in the “Your competitors” section.

Post bySi Quan Ong

Si Quan is a content marketer at Ahrefs. He has been involved in digital and content marketing for the past 5 years. Before he joined Ahrefs, he was content marketer at ReferralCandy, a 7-figure ARR SaaS company.

Si Quan has spoken at some of the industry’s largest conferences in the Asia region, which includes TIECon and Digital Marketing Skill Share. He has also written for some of the industry’s most popular blogs like Sumo and SmartBlogger.

His earliest work was marketing a product on Kickstarter, which eventually raised $150,000, more than double the original funding goal. The product was also featured on prominent tech websites, including Engadget, CNET and Digital Trends.

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