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[ARTICLE Β· art-162671] src=stacysbrain.com β†— pub= topic=ai-search verified=true sentiment=↑ positive

Stacy's Brain

Stacy's Brain has launched a marketing-insight database of 883 cards, each assigned a reliability tier, to distinguish vendor surveys, case studies and academic papers that are often quoted with equal confidence. The service connects to Claude so that marketing benchmarks returned by the assistant carry the reliability tier, the underlying study and its limitations, and it cites an Ahrefs finding that only 12% of links cited by AI assistants appear in Google's top 10 results for the same prompt. The product is free to browse, save and share, with search by metric or channel, bookmarks, personal notes and optional public folders.

read2 min views2 publishedNov 2, 2026
Stacy's Brain
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Only 12% of links cited by AI assistants show up in Google's top 10 search results for the same prompt checked and graded so you can build on evidence

- [CollectionIncreasing creator marketing efficiency in 2027](https://stacysbrain.com/collections/increasing-creator-marketing-efficiency-in-2027)
- [CollectionHow to earn AI search citations](https://stacysbrain.com/collections/how-to-earn-ai-search-citations)

883

Each card #

has a reliability tier

Because not every insight #

is worth an action

Stacy's Brain exists because a vendor survey and a peer-reviewed experiment get quoted with the same confidence β€” and they shouldn't be. Vendor reports, case studies, and academic papers all use different methods and samples; we grade the difference so you don't have to guess it.

Browse our evidence-based collections

collections

Rated marketing evidence, inside Claude #

Ask any assistant for a marketing benchmark

and you'll get a number.

You won't get the part that matters: that it came from a company selling the thing the number promotes, that the sample was their own clients, and that it's two years old.

Connect Stacy's Brain and every marketing number Claude gives you comes back with a reliability tier, the study behind it, and what that study doesn't cover.

Turn our stats into #

a plan you can defend

Browse, save, share – for free

  • Search by metric, channel, or the question you're trying to answer
  • Bookmark and create insight collections
  • Add personal notes to each insight
  • And if you need – make your folders public
── more in #ai-search 4 stories Β· sorted by recency
── more on @stacy's brain 3 stories trending now
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