Definition · 2026-07-14
Between your content and your buyer there is now a layer, and the layer is a model.
The compounding layer is the accumulated body of retrievable material associated with a brand, including citations, mentions, reviews, definitions, and original data, that determines whether AI engines such as ChatGPT, Claude, Perplexity, Gemini, and Google's AI Overviews recommend that brand.
The essay names it, shows the mechanism, and gives the "GEO is just SEO repackaged" skeptics their due.
Experiment · Pre-registered · 2026-07-15
Can a brand enter the AI answer layer on purpose? 180 days, one named test subject.
- HYPOTHESIS
- A brand can deliberately build its compounding layer and enter the AI answer layer for its category within 180 days.
- TEST SUBJECT
- recruitmentcrm.com. Owned by the author of this site. Disclosed here and in every study touching the recruitment category, and excluded from all vendor rankings.
- METHOD
- 100 segment-labeled buying questions about recruitment software, asked of ChatGPT, Claude, Perplexity, and Gemini through search-grounded APIs, 5 runs per engine per cycle, on a fixed schedule. A smaller sample from the consumer UIs runs each cycle; API vs UI divergence is measured and reported, not assumed away. The full prompt panel and scoring publish with the methodology page.
- BASELINE
- Snapshot #1, recruitment software. Collection begins 2026-07-15. Publishes 2026-07-28.
- FALSIFIED IF
- After 180 days, recruitmentcrm.com's mention rate across the four engines is not separable from its baseline variance.
- CHECK-IN
- 2027-01-11
The ledger
2026-07-14 What is the compounding layer? Definition 2026-07-14 Glossary v1: six terms Glossary