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

Copilot is woven through Windows, Edge, Bing, and Microsoft 365, and that reach is enormous: Microsoft says the Copilot apps alone draw more than 100 million monthly active users, with over 800 million people touching Copilot-powered AI features across its products. Whatever Copilot cites, in other words, lands in front of a vast, work-focused audience. With Microsoft now pushing shopping and checkout straight into Copilot chats, the commercial slant of its sources matters more than ever.

To see where it pulls from, we tracked every domain Copilot cited across a broad set of US queries, then ranked them by mention share — each domain’s slice of all the citations the top sources collectively earn. The leader is www.amazon.com, capturing 16.8% of citations.

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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.

#	Website	Mention share	vs last month	Pages cited	DR
1	www.amazon.com	16.8%	–	775,592	96
2	www.walmart.com	12.6%	–	544,116	92
3	en.wikipedia.org	7.6%	–	118,076	97
4	scienceinsights.org	3.5%	▲ 1	55,040	70
5	engineerfix.com	3.3%	▼ 1	73,880	59
6	grokipedia.com	3.1%	–	62,702	78
7	goto.walmart.com	3.0%	▲ 2	88,672	92
8	www.target.com	2.8%	▼ 1	80,247	91
9	biologyinsights.com	2.5%	▼ 1	56,374	71
10	www.etsy.com	2.4%	▲ 1	151,372	94
11	www.youtube.com	1.9%	▲ 3	149,378	99
12	www.homedepot.com	1.9%	▲ 5	74,759	90
13	www.wikihow.com	1.8%	▲ 2	17,344	91
14	www.bestbuy.com	1.8%	▲ 2	48,463	89
15	www.kbb.com	1.6%	▼ 3	33,389	89
16	www.edmunds.com	1.6%	▼ 3	21,003	86
17	www.macys.com	1.5%	▲ 3	50,945	85
18	www.lowes.com	1.4%	▲ 3	55,016	88
19	www.forbes.com	1.4%	▼ 1	14,059	94
20	www.merriam-webster.com	1.3%	▼ 1	29,254	91
21	www.collinsdictionary.com	1.1%	▲ 1	24,968	86
22	wellnd.com	1.1%	▼ 12	44,103	35
23	www.wayfair.com	1.1%	▲ 3	40,345	88
24	wellwhisk.com	1.1%	▲ 10	21,900	14
25	www.mayoclinic.org	1.1%	–	3,413	92
26	www.comparor.com	1.0%	▲ 23	24,811	37
27	www.yahoo.com	1.0%	▲ 4	26,189	94
28	my.clevelandclinic.org	1.0%	▲ 10	3,412	92
29	hometosight.com	0.9%	–	19,474	9
30	www.healthline.com	0.9%	▼ 6	7,231	92
31	www.nordstrom.com	0.9%	▲ 6	35,020	86
32	manuals.plus	0.9%	▲ 16	36,333	75
33	dictionary.cambridge.org	0.9%	▼ 10	22,747	92
34	www.kohls.com	0.9%	▲ 10	28,439	82
35	www.consumerreports.org	0.8%	▼ 3	12,866	90
36	hub.sivo.it.com	0.8%	▲ 5	16,620	92
37	www.linkedin.com	0.8%	▲ 9	25,257	99
38	kateminimalist.com	0.8%	NEW	19,168	35
39	www.alibaba.com	0.8%	▼ 9	29,081	92
40	www.aeanet.org	0.8%	▼ 5	18,608	54
41	thelivinglook.com	0.8%	NEW	24,024	5
42	www.bbb.org	0.8%	NEW	27,964	93
43	carinterior.alibaba.com	0.8%	▼ 7	19,066	92
44	www.ebay.com	0.8%	▼ 1	44,464	93
45	www.trustpilot.com	0.8%	▲ 2	20,748	94
46	www.webmd.com	0.8%	▼ 6	4,925	92
47	wellfr.com	0.8%	▼ 5	19,123	6
48	www.britannica.com	0.8%	▼ 3	13,386	92
49	www.instacart.com	0.7%	▼ 10	24,816	86
50	www.aol.com	0.7%	NEW	16,824	91

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 Copilot cited across over 3 million US queries spanning all topics, then counted how often each domain appeared as a source.

For each website we report:

Mention share — a domain’s citations as a percentage of the summed citations of the top 50 most-cited sources. It shows how much of Copilot’s “source attention” each website captures.
vs last month — how the domain’s rank has moved since the previous monthly snapshot (▲ climbed, ▼ fell, or NEW if it wasn’t in last month’s top 50).
Pages cited — the number of distinct pages on the domain that Copilot cited, a measure of how broadly the site is referenced rather than how often.
DR (Domain Rating) — Ahrefs’ 0–100 measure of a website’s backlink-profile strength, included for context on each source’s overall authority.

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.

To track your brand’s presence in Copilot, you’ll need to use Ahrefs’ Brand Radar.

Measure your brand’s visibility in Copilot, see the specific queries where your brand gets mentioned (and the ones where it doesn’t), the pages that mention your brand, and then compare every metric with your closest competitors:

Post byRyan Law

Ryan Law is the Director of Content Marketing at Ahrefs. Before joining the team, Ryan was CMO at content marketing agency Animalz.

Over the past 13 years, Ryan has been a writer, content strategist, team lead, marketing director, VP, CMO, and agency co-founder. He's worked with companies including Google, Zapier, Textio, Clearbit, and Algolia and hosted workshops and webinars for many more.

Ryan is the creator of two fantasy novels, two writing courses, and many more (less successful) projects.