B2B buyers start with AI, then verify with sales: 13 internal stakeholders and 9 external influencers per purchase
Answer engines have become the starting point for B2B buying, but buyers do not fully trust them — they go find a human or a third party to validate.
Key numbers
- Forrester, The State of Business Buying, 2026: a typical B2B purchase now involves 13 internal stakeholders and nine external influencers, and the numbers grow with complexity and strategic importance.
- Procurement professionals are decision-makers in 53% of business buying cycles and engage from the start, looking beyond price at features and productivity.
- More than 60% of business buyers now use a trial (paid sandboxes or usage-based periods) to evaluate solutions; among purchases of $10M or more, 78% trial first.
- 94% of buyers in groups of six or more report clear benefits: broader perspectives, shared validation, and a better shot at getting budget approved.
- AI search often delivers incomplete or unreliable information, creating mistrust that buyers resolve through trusted sources and human contact — a May 2026 Gartner survey found 69% of B2B buyers turn to sales reps to validate AI-generated insights.
Method and sample
Two independent analyst-firm studies: Forrester's The State of Business Buying, 2026 (press release, 2026-01-21) on buying-group structure, trial behaviour and AI's effect on the purchase process; and Gartner's press release of 2026-05-20 reporting that 69% of B2B buyers validate AI-generated insights with sales reps. Neither firm is affiliated with SourceSight.
What it means for brands
In B2B, the AI entry point is a starting line, not the finish: AI may shortlist you or skip you entirely, but the decision still moves between buying groups, external influencers and sales validation. So being described correctly inside AI and being verifiable elsewhere have to be worked on together.
How SourceSight handles it
SourceSight builds prompt libraries around buying scenarios (which to choose, pricing, risk, credentials and compliance), one project per market, reports mentions and position per engine, and uses the off-site list to cover the third-party sources buyers check when verifying you.
Limits
Both sources are commercial analyst firms whose public releases omit full survey detail such as sample size and industry mix; the data skews to Western B2B buyers and needs separate validation for China and other markets.
References
Run it on your own project
What the same prompts return across 10 engines is only knowable by running them.
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