AI is now the #1 influence on B2B shortlists, ahead of your own website
The Finding
G2 asked 1,100 B2B decision-makers what shapes their vendor shortlist, and one number in the results should change where B2B marketing budget goes.
Generative AI chatbots came first, at 17.1%. Software review sites came second at 15.1%. Vendor websites, the thing most marketing budgets are built around, came third at 12.8%. Peer recommendations, long treated as the most powerful force in B2B, came fifth at 8.9%, behind market research firms.
Your own website is no longer the primary thing shaping whether you make the list.
How deep it goes
Other measurements of the same behaviour land in the same place.
94% of B2B buyers now use LLMs somewhere in vendor research, per Machine Relations. G2’s March 2026 follow-up found 51% now start their research in an AI chatbot more often than in Google, 71% rely on chatbots for software research, and 82% have sourced a recommendation from one in the last two years.
The influence carries through to the decision. In a Semrush survey of 622 US professionals, 92% of buyers say AI shaped their vendor shortlist, with 45% describing the impact as significant. 83% say AI influenced the final decision, 32% calling it a major influence.
The part that should worry you
Two numbers together change the maths of visibility.
The shortlist closes before you know it exists.
6sense surveyed around 4,000 buyers and found the winning vendor was already on the day-one shortlist 95% of the time. Four deals in five go to the vendor the buyer privately favoured before making any contact. Ninety-four percent rank that list before speaking to a seller.
And the list can be rewritten without you. In G2’s 2026 survey, 69% of buyers chose a different vendor than they had planned after chatbot research, and a third bought from a company they had never heard of beforehand.
Eighth place on a results page still put you somewhere a buyer scrolled past. Eighth place against an answer naming three companies reaches nobody, because there is no page two and nothing to scroll.
The funnel narrowed rather than moving.
What arrives when you do make the list
The traffic is the best-converting on the web.
Semrush measured the average AI search visitor as 4.4 times as valuable as the average organic one across 500+ topics. At the top of the range, Ahrefs reported that on its own site half a percent of traffic produced 12.1% of signups, a 23x rate. In one Seer Interactive client case study, ChatGPT traffic converted at 15.9% and Perplexity at 10.5%, against 1.76% for Google organic.
Adobe found the same pattern in behaviour. Visitors arriving at US retail sites from generative AI browsed 12% more pages, bounced 23% less, and showed 8% higher engagement than everyone else.
Someone who arrives from an AI answer has already had their question answered and their options narrowed, so they land on the site at the choosing stage rather than the researching one.
Why the window is closing
Assistants keep recommending what they already trust. Sources that establish themselves in a category get reinforced by every subsequent answer, which makes displacement progressively harder.
Adobe recorded AI-driven traffic to US retail rising 1,200% between July 2024 and February 2025. ChatGPT passed 900 million weekly users in February 2026, up from 800 million four months earlier.
Most competitors are still treating this as next year’s problem, which is the window.
What to do about it
Find out whether AI assistants can read your site at all. It is a one-day test and a surprising number of well-built sites fail it: in our 2026 tour operator index, four of sixteen companies had an access or rendering fault that made them invisible, and none could see it from their own robots.txt.
Sources: Semrush B2B buying survey · Machine Relations · G2 2026 software buying data · Ahrefs AI search traffic analysis · Adobe Analytics
