Vantage research · November 2026 · AI assistants
What AI cites for “best ai for summarizing documents”
ChatGPT cited 10 sites, Gemini cited 8 sites, Perplexity cited 9 sites. No site was cited by all three.
Updated monthlyNext edition 1 December 2026
ChatGPTGeminiPerplexity dots beside a site: the other engines that cite it too
ChatGPT
10 sites · opens with a sentence · has a table · opening 25 words
- notebooklm.google.com
- claude.ai
- chatgpt.com
- adobe.com
- chatpdf.com
- copilot.microsoft.com
- digitaltatva.com
- dupple.com
- itechguides.com
- ones.com
Brands namedGoogle NotebookLM, Claude, ChatGPT, Adobe Acrobat AI Assistant, ChatPDF, Microsoft Copilot, Budget
Gemini
8 sites · opens with a sentence · no table · opening 21 words
- mindmapai.app
- lindy.ai
- qureco.qurio-inc.com
- proofreaderpro.ai
- reddit.comcommunity
- activeloop.ai
- fast.io
- firecrawl.dev
Brands namednone
Perplexity
9 sites · opens with a sentence · has a table · opening 34 words
- cloud.google.com
- clickup.com
- fast.io
- dupple.com
- lindy.ai
- mioffice.ai
- atlasworkspace.ai
- paperpal.com
- fireflies.ai
Brands namednone
Cited by more than one engine
- dupple.com
- lindy.ai
- fast.io
Is your site one of them?
Ask your AI agent to run Vantage's analyze_citation_coverage for your domain and “best ai for summarizing documents”, on all
three engines, and it will tell you whether you are cited, who is instead, and what changed since your last check.
More AI assistants questions
Each engine was asked once, in English, as from the United States, on 2026-11-01. Answers change from run to run, so read this as a snapshot. Download the data.