The part of the funnel you never saw is changing
B2B buyers always did most of their research before talking to anyone; the standard estimate has hovered around two-thirds of the journey happening before a sales contact. What changed is where that research happens. Instead of twenty tabs of review sites and vendor pages, a buying team can now ask one assistant to survey the category, compare vendors, and draft the shortlist memo.
Four concrete shifts
1. The shortlist forms in one step
Category discovery used to be a funnel of its own: search, skim, compare, narrow. An assistant compresses it into a single answer naming a handful of vendors. Absence from that answer is not a lower ranking; it is nonexistence for that buyer. Which vendors make it is governed by the signals in How ChatGPT Recommends Companies.
2. Comparison content gets consumed by machines
Your versus pages and feature matrices are still read, but increasingly by a model assembling its own comparison. Content strategy shifts from winning the click to being the source the synthesis cites, which rewards clarity and verifiable claims over persuasion.
3. The dark funnel gets darker, then resurfaces as branded search
AI research produces no referral trail. What you will see is its exhaust: buyers who arrive already educated, searching your name. Branded search volume and the quality of your page one, covered in Owning Page One, become your best proxy metrics.
4. Third-party evidence outweighs owned claims
A model summarizing a category leans on independent sources to adjudicate between vendors who all describe themselves identically. Coverage, interviews, and citations become the tiebreakers, the argument of Why SaaS Companies Need Third-Party Authority.
What vendor marketing does about it
Make the public record answer three questions unambiguously: what you are, who you are for, and why you are credible. That means entity work and schema, a steady placement and interview program, and monthly monitoring of the actual assistant answers for your category questions. The security-specific version is in AI Search Visibility for Cybersecurity Companies; the budget conversation is in SEO vs AI Search for SaaS.
Your buyers already asked. See the answer.
The Authority Test shows how AI currently positions you in your category.
Run the Authority Test