Quick answer
Microsoft's AI Performance report, in public preview since February 2026, gives publishers their own Total Citations, Average Cited Pages and Grounding Queries figures inside Copilot and Bing's AI summaries; independent analysis of the public citation mix found large, high-authority domains (Amazon prominent among them) and major news publishers taking a disproportionate share, a pattern also seen on other answer engines.
Copilot answers by rewriting a question into a short search query, retrieving results from Bing (what Microsoft calls a grounding query), and composing a response with clickable citations. That gives Copilot a more search-like, source-transparent structure than assistants that answer mostly from training data.
Microsoft's own reporting
In February 2026, Microsoft brought an AI Performance report into public preview, giving publishers direct figures for how their content appears across Copilot, Bing's AI-generated summaries, and what Microsoft describes only as "select partner integrations," without naming them. The metrics include Total Citations, Average Cited Pages and Grounding Queries, a first for any major assistant to expose this directly to publishers.
What independent analysis of citations shows
- Ahrefs' analysis of cited domains found Amazon alone capturing roughly 14.6% of citations, suggesting large, high-authority retail and reference sites are heavily favored
- A separate ranking of the most-cited sites in Copilot (June 2026) skews toward major publishers and reference sites rather than smaller independent ones
- One vendor's breakdown put major news and publisher sites at roughly 24% of cited sources, with Microsoft's own ecosystem (Microsoft, LinkedIn, GitHub and similar) at about 13%
These figures come from different methodologies and should not be combined into one number, but they point the same direction: Copilot's citation mix leans toward large, established sources, similar to what has been observed on other answer engines.
Reach, separately from citations
What this means for measurement
- If your brand is a Microsoft 365 customer or partner, check whether tenant-context answers (which can blend in work-graph data) differ from public ones
- Watch Microsoft's AI Performance report directly if you can access it, rather than relying only on third-party citation-share studies
- Expect the same pattern seen elsewhere: larger, more established sources get cited more, which argues for earning mentions on them rather than only publishing more on your own site
Frequently asked questions
Can publishers see their own Copilot citation data?
Microsoft's AI Performance report, in public preview since February 2026, gives Total Citations, Average Cited Pages and Grounding Queries directly to publishers, a level of transparency most other assistants do not yet offer.
Does Copilot favor big brands over smaller ones?
Independent citation studies show large, established domains taking a disproportionate share, which is consistent with what has been found on other answer engines, not unique to Copilot.
Sources
- 1. Ahrefs: most-cited domains in Copilot (2026)
- 2. The 50 most-cited websites in Copilot, June 2026 (Jun 2026)
- 3. How Bing grounding works in Copilot (Updated 21 May 2026)
Cite this page
BrandWater AI Research. (2026, 16 October 2026). Microsoft Copilot's citations: what the available data shows. https://brandwaterai.in/research/microsoft-copilots-citations-what-the-data-shows
How we work
Figures are dated and linked to their sources. Where none exist we say so. Read our methodology and AI transparency pages.