Last updated November 11, 2026 · ~8 min read
The short answer: Every number on this page comes from Hasmord Research’s own studies of ChatGPT, Perplexity and Google AI Overviews in October and November 2026. Across them, each engine cites its own set of sources, ranking on Google barely carries over to ChatGPT, and answers change between runs, so one check tells you little. For example, Hasmord Research’s Google Ranking vs AI Citation Study (November 2026) found that only 3% of the pages ChatGPT cited ranked on Google’s page one for the same question.
88%of 538 Google searches for buying questions showed an AI Overview
3%of the pages ChatGPT cited ranked on Google’s page one for the same question
15% vs 96%of cited sites came back in all three same-day runs: ChatGPT vs Perplexity
88–97%of AI answers to B2B buying questions cited a vendor’s own site
Each line below is one finding from one study, with the study’s name and month, so it reads on its own. Follow the study’s name for its method, its data and its limits.
Google AI Overview statistics
- Hasmord Research’s AI Overview Presence Study (November 2026) found that Google showed an AI Overview in 88% of 538 US searches for 120 buying questions.
- Hasmord Research’s AI Overview Presence Study (November 2026) found that 23 of 60 shopping questions got an AI Overview in some searches and not in others, and every one of them changed within a single day.
- Hasmord Research’s AI Overview Presence Study (November 2026) found that “best X” product questions got an AI Overview least often (71% of searches), and when none showed, Google showed a Popular products grid on 58% of those pages, against 14% when an overview showed.
- Hasmord Research’s B2B AI Search Sources Study (November 2026) found that 30% of Google AI Overview citation links passed through a google.com redirect on November 5, 2026, against none of 2,333 on October 22.
- Hasmord Research’s AI Overview Sources Study (October 2026) found that 55 of 57 shopping searches on Google US showed an AI Overview, and the median overview cited 7 sites.
- Hasmord Research’s AI Overview Sources Study (October 2026) found that YouTube was cited in 85% of AI Overviews for shopping questions (47 of 55), and Reddit in 51%.
- Hasmord Research’s AI Overview Sources Study (October 2026) found that a brand’s own website was cited in 49% of AI Overviews for shopping questions (27 of 55), but in only 1 of 11 brand-versus-brand comparisons.
ChatGPT and Perplexity citation statistics
- Hasmord Research’s Perplexity vs ChatGPT Study (November 2026) found that Perplexity cited a median of 9 sites per shopping answer, and ChatGPT’s answers were three times longer.
- Hasmord Research’s Perplexity vs ChatGPT Study (November 2026) found that in the 25 shopping questions where both named brands, 76% of the brands ChatGPT named were also named by Perplexity; of the sites ChatGPT cited, only 17% were also cited by Perplexity.
- Hasmord Research’s AI Assistant Shopping Sources Study (October 2026) found that a brand’s own site was cited in 57% of ChatGPT shopping answers with sources and 53% of Perplexity answers, against 49% of Google AI Overviews.
- Hasmord Research’s AI Assistant Shopping Sources Study (October 2026) found that only 8% of the sites ChatGPT cited for a shopping question were also cited by Google’s AI Overview for the same question; for Perplexity it was 13%.
- Hasmord Research’s AI Assistant Shopping Sources Study (October 2026) found that ChatGPT and Perplexity cited no YouTube pages for 60 shopping questions, while 85% of Google AI Overviews cited video.
SEO vs AI search: does ranking get you cited?
- Hasmord Research’s Google Ranking vs AI Citation Study (November 2026) found that only 3% of the pages ChatGPT cited for 60 shopping questions ranked on Google’s page one for the same question, and 63% of its answers cited no page-one site at all.
- Hasmord Research’s Google Ranking vs AI Citation Study (November 2026) found that Google’s AI Overviews cited at least one site from Google’s page one in 91% of answers to the same 60 shopping questions.
- Hasmord Research’s Google Ranking vs AI Citation Study (November 2026) found that the #1 Google result’s site appeared in 7% of ChatGPT’s answers to the same question.
- Hasmord Research’s AI Overview Ranking Study (October 2026) found that the page ranked #1 on Google was cited in 29% of 55 AI Overviews for shopping questions.
- Hasmord Research’s AI Overview Ranking Study (October 2026) found that 73% of the pages cited in AI Overviews for shopping questions were not on page one for that search.
- Hasmord Research’s AI Overview Sources Study (October 2026) found that 64% of the sites cited in AI Overviews for shopping questions were outside the organic top 10 for that exact search.
B2B AI search statistics
- Hasmord Research’s B2B Content Citation Study (November 2026) found that 78% of the 321 comparison pages cited on “X vs Y” B2B buying questions were on a third company’s site, not on either company being compared.
- Hasmord Research’s B2B Content Citation Study (November 2026) found that review platforms were cited in 50% to 58% of “is X worth it” answers to B2B buying questions, and in none of the “how to choose” answers.
- Hasmord Research’s B2B Content Citation Study (November 2026) found that Google’s AI Overviews cited a video in 69% to 86% of answers to B2B buying questions, while ChatGPT and Perplexity cited none.
- Hasmord Research’s B2B AI Search Sources Study (November 2026) found that 88–97% of AI answers to B2B buying questions cited at least one vendor’s own site, depending on the engine, against 50–57% citing a brand site for shopping questions.
- Hasmord Research’s B2B AI Search Sources Study (November 2026) found that 64% of Google AI Overviews for B2B buying questions cited a forum or social site, against 4% of ChatGPT answers and 5% of Perplexity answers.
- Hasmord Research’s ChatGPT Product Card Study (November 2026) found that ChatGPT showed product cards in 57% of 180 shopping answers, and only 1 of their 297 store links went to Amazon.
- Hasmord Research’s ChatGPT Product Card Study (November 2026) found that ChatGPT stated a price in 83% of shopping answers, against 51% for Google AI Overviews and 25% for Perplexity through its API.
- Hasmord Research’s Perplexity vs ChatGPT Study (November 2026) found that Perplexity gave a price in 25% of shopping answers and named a brand in none of 36 “how to choose” answers.
- Hasmord Research’s AI Assistant Shopping Sources Study (October 2026) found that 53% of ChatGPT shopping answers cited a retailer page, against 27% of Google AI Overviews.
How much AI answers change between runs
- Hasmord Research’s ChatGPT Answer Consistency Study (November 2026) found that when 60 shopping questions were each asked three times in one morning without an account, ChatGPT gave the same answer word for word for 0 of 60.
- Hasmord Research’s ChatGPT Answer Consistency Study (November 2026) found that two ChatGPT answers to the same shopping question, asked an hour apart, shared 39% of their distinct words on average.
- Hasmord Research’s ChatGPT Answer Consistency Study (November 2026) found that ChatGPT ran the same web searches in all three same-day runs for only 1 of the 47 shopping questions it searched for every time, and for 7 of 60 questions it searched in some runs but not in others.
- Hasmord Research’s B2B AI Search Sources Study (November 2026) found that for the same 60 shopping questions, Perplexity cited 99% of the same sites an hour later but 62% two weeks later; ChatGPT 48% and 37%; Google AI Overviews 77% and 57%.
- Hasmord Research’s ChatGPT Product Card Study (November 2026) found that when the same shopping questions were asked again an hour later, 36 of 78 products on ChatGPT’s cards linked to a different store at some point, and 21 of 54 showed prices more than 2% apart.
- Hasmord Research’s AI Brand Mentions Study (October 2026) found that 46% of the brands ChatGPT named appeared in all three same-day runs of the same question, against 15% of the sites it cited.
- Hasmord Research’s AI Shopping Answers Accuracy Study (October 2026) found that only 15% of the sites ChatGPT cited appeared in all three same-day runs of a question, against 55% for Google AI Overviews and 96% for Perplexity.
AI answer accuracy statistics
- Hasmord Research’s AI Fact-Checking Test (November 2026) found that a second AI gave the right value for only 3 of 11 wrong shopping answers; in the other 8, another AI repeated the same error.
- Hasmord Research’s AI Fact-Checking Test (November 2026) found that asking the same AI again found the right value for 4 of 11 wrong shopping answers.
- Hasmord Research’s AI Fact-Checking Test (November 2026) found that all 11 wrong shopping answers linked the seller’s own site, which had the right value.
- Hasmord Research’s AI Shopping Answers Accuracy Study (October 2026) found that 5 of 55 store prices quoted in AI answers to “where to buy” questions were wrong.
- Hasmord Research’s AI Shopping Answers Accuracy Study (October 2026) found that ChatGPT and Perplexity called one in-stock product sold out in all 6 of their answers.
AI crawler statistics (GPTBot, OAI-SearchBot, ClaudeBot)
- Hasmord Research’s AI Crawler Access Study (November 2026) found that 11.9% of 762 sites cited in AI answers block GPTBot, against 4.2% that block OAI-SearchBot.
- Hasmord Research’s AI Crawler Access Study (November 2026) found that ChatGPT cited 45 pages that GPTBot was not allowed to fetch; 39 of them were open to OAI-SearchBot.
- Hasmord Research’s AI Crawler Access Study (November 2026) found that 19.6% of the review sites and media cited in AI answers block GPTBot, against 2.5% of brands.
- Hasmord Research’s AI Crawler Access Study (November 2026) found that 14.0% of 762 cited sites block ClaudeBot, against 7.7% for Claude-SearchBot.
How these numbers were collected
Every study asked questions written the way people ask before they buy, in English, in the US: mostly the same 60 shopping questions and 60 B2B buying questions, asked in Google (AI Overviews), ChatGPT and Perplexity, most of them three times. Every site an answer cited was recorded and given a type by hand with one published scheme. Each study page says exactly how each engine was asked, on which dates, and what the study cannot tell you.
These are snapshots: one market, a fixed set of questions, and engines that change their answers. Read each number with its study, not as a law of AI search.
How to cite these statistics
Use any number on this page with credit: name Hasmord Research and the study, and link to the study’s page. Each line above already carries the study’s name and month, so you can quote it as written. The full studies also publish their raw data as a free CSV on their page.
We add new numbers here with every new study; the date at the top shows the last update. All studies: Hasmord Research.
Where Hasmord fits
Hasmord is the AEO-native sales platform. Buyers ask questions across AI assistants, search, and sales conversations. Hasmord uncovers where your answers about your products and services fall short, turns evidence into better answers, finds potential customers for you, and connects every lead to your sales process.
The studies on this page read AI answers the way Hasmord reads them for your own products. AI answers asks ChatGPT, Claude, Gemini and Perplexity your buyers’ questions and keeps every answer and its sources, so you see where assistants answered without your facts; Hasmord then prepares fixes, product by product, for your team to approve.
Find customers finds potential customers already looking for what you sell, with the reason each one fits; only the people you verify join your CRM, where each lead keeps the question that brought it. See pricing.
Frequently asked questions
How often does Google show an AI Overview?
Most of the time for buying questions, but not every time. Hasmord Research’s AI Overview Presence Study (November 2026) found that Google showed an AI Overview in 88% of 538 US searches for 120 buying questions, and that 23 of 60 shopping questions got one in some searches and not in others.
Does ranking on Google get you into ChatGPT answers?
Very little, in our data. Hasmord Research’s Google Ranking vs AI Citation Study (November 2026) found that only 3% of the pages ChatGPT cited ranked on Google’s page one for the same question, while Google’s own AI Overviews cited at least one page-one site in 91% of answers.
Do ChatGPT, Perplexity and Google cite the same sources?
Rarely. Hasmord Research’s AI Assistant Shopping Sources Study (October 2026) found that only 8% of the sites ChatGPT cited for a shopping question were also cited by Google’s AI Overview for the same question; for Perplexity it was 13%.
How much do AI answers change if you ask again?
It depends on the engine. Hasmord Research’s AI Shopping Answers Accuracy Study (October 2026) found that only 15% of the sites ChatGPT cited appeared in all three same-day runs of a question, against 55% for Google AI Overviews and 96% for Perplexity.
What do AI assistants cite for B2B buying questions?
Mostly vendors’ own sites. Hasmord Research’s B2B AI Search Sources Study (November 2026) found that 88–97% of AI answers to B2B buying questions cited at least one vendor’s own site, depending on the engine.
Can I use these statistics?
Yes, with credit: name Hasmord Research and the study, and link to the study’s page. Each study states its method and limits, and the full studies publish their raw data as a free CSV.
Related: Hasmord Research · B2B AI search sources study · AI Overview sources study · LLM SEO · generative engine optimization · AI brand mentions.
