Zumi
Book a demo
Menu

Zumi Research

Research on how AI engines answer

Studies of the sources AI engines cite, the brands their answers mention, and how both shift over time.

Research notes
9
Latest
October 17, 2026
Dark card titled Cited once. 55.6% of 12,625 pages were cited exactly once, the top 10 domains held 19.8% of citations, and the most-cited page appeared in 5.3% of answers.Latest research note

A Zumi run of 5,120 AI answers shows which pages get cited, how few domains take the share, and why most pages are cited once. Read the data.

Read the research

All research

9 pieces
  1. Research noteFor One India Beauty Buyer, AI Engines Agree on the Source Before the BrandAcross 54 India beauty search queries, 7 of 8 buyer segments show AI engines agreeing more on brands than sources. One segment inverts it.3 min read
  2. Research noteThe dark funnel in AI search, measuredAcross 77 tracked answers, Google AI Overviews used the term dark funnel in 8 of its 25. Gemini used it twice, AI Mode once. Read the research.6 min read
  3. Research noteGemini, AI Overviews, and AI Mode cite differentlyZumi asked one question across Gemini, AI Overviews, and AI Mode for 19 days. The three engines cited 362 domains and shared 9. Read the study.11 min read
  4. Research noteHow B2B Buyers Use AI When Researching VendorsThe verified research on B2B AI adoption in purchasing, and what it means for how and when brands need to appear in AI answers. Read the research.8 min read
  5. Research noteHow Perplexity decides which sources to citePerplexity runs the strictest quality gate of any major AI engine. Here is what determines whether a brand's content makes the cut. Read the guide.8 min read
  6. Research noteState of AI search, October 2026: the verified dataVerified, sourced numbers on AI search as of October 2026: adoption is settled, B2B buyers lead, and clicks fall when AI answers appear.7 min read
  7. Research noteHow AI engines decide what brands to mentionWhat published research says about the signals behind brand mentions in ChatGPT, Google's AI features, Perplexity, and Claude. Read the research.8 min read
  8. Research noteAI engine comparison: market share, conversion, and answer stabilityMarket-share trackers rank AI engines by users. Zumi's 8,740 answers show how often each engine repeats a brand mention. Read the comparison.6 min read

How to read this research

Every research note opens with a reading brief: the decision it informs, the evidence behind it, and the action it points to. The key findings follow, each led by its takeaway.

Where a note explains how its data was collected, the header links straight to that section, so the method can be checked before a figure is reused.