Why credibility will get you on the LLM shortlist in B2B marketing

Opinion

Generative AI is ushering in a ‘reputation age’ for B2B marketing. It requires a fundamental rethink that will see three major shifts, says LinkedIn’s VP of marketing.

For years, B2B marketing had a reliable navigation system. Buyers searched, clicked, compared and engaged – leaving behind clear signals marketers could track and influence. Scale worked because discovery was linear and visibility could be bought.

But in 2026, that model is changing.

The rapid adoption of large language models (LLMs) such as Copilot, ChatGPT, and Gemini is ushering in a ‘reputation age’ for B2B marketing. Discovery is becoming more automated, less observable and far more dependent on credibility signals: expert opinion, trusted media coverage and authentic professional voices. 

Research shows that 94% of B2B buyers use LLMs during their purchase journey, often forming consideration sets before brands even know they are in-market. In this environment, visibility alone is no longer enough. Precision and expertise increasingly determine which brands are surfaced, trusted, and shortlisted. 

For B2B marketers, this requires a fundamental rethink of what marketing is actually responsible for. The task is no longer just to generate awareness but build confidence with both human buyers and the AI systems increasingly shaping their decisions.

In 2026, that confidence will not be judged by optics, but by outcomes – how effectively marketing activity actually drives business impact, from pipeline quality to revenue growth. 

As a result, we’ll see three major shifts in B2B marketing in the months ahead.

Awareness becomes authority

In a reputation-led brand discovery environment, authority is no longer a brand-building exercise. It’s a prerequisite for being found. 

Some forecasts predict a 50% drop in organic search traffic by 2028. The shift to AI search means reputation must be built intentionally, not bought. AI-driven systems don’t prioritise whoever shouts the loudest. They surface brands that are consistently referenced by experts, cited in credible media and discussed in professional contexts. 

As a result, we’ll see B2B marketers move away from short-term influencer tactics and towards long-term partnerships with creators, analysts, employees and subject-matter experts who carry real authority.

Ultimately, reach without relevance will be reduced to noise in this environment, placing a real onus on expertise as a signal of credibility.

This marks a clear opportunity: trusted editorial environments and expert voices will play a bigger role in shaping B2B consideration.

What does scale really mean?

As buying journeys become more complex while budgets tighten, B2B marketers can no longer afford visibility without confidence. With AI increasingly mediating discovery, the stakes are rising. By 2028, $750bn in US revenue is expected to funnel through AI powered search, raising the bar for how marketers demonstrate impact and drive growth.

In 2026, pressure to justify every pound spent will intensify, with performance expectations demanding measurable impact rather than broad exposure. Targeting strategies built on volume over relevance will become harder to defend as buying groups grow more defined and identifiable. 

This will force marketers to rethink what scale really means. Instead of chasing the largest possible audience, marketers will focus on reaching the right combination of roles, industries, and senior decision-makers at the moments that matter. Precision will no longer be a performance tactic; it will be a strategic imperative. 

At the same time, definitions of success will shift.

In a landscape where clicks and form fills no longer tell the full story, marketers will face growing pressure to demonstrate which activities genuinely contribute to pipeline and revenue.

That means moving beyond last-click attribution and investing in measurement approaches that prioritise incrementality, business impact, and clear alignment with sales on what ‘quality’ actually looks like. 

As a result, media strategies that deliver clarity, relevance, and real business outcomes – not just reach – will increasingly win budget. The value exchange will shift from ‘how many people can you reach?’ to ‘how confidently can you influence the right ones?’

How confidently can you influence the right people? 

In 2026, the defining question in B2B buying won’t be “who’s best?” – it will be “who feels safest to choose?”

The standard B2B customer journey is now nearly seven months long, and B2B buyers are younger, with Millennials and Gen Z accounting for more than 71% of B2B buyers today.

The rules of influence and trust are rapidly changing with technological and generational shifts – and younger buyers today are consistently influenced by what experts, peers and ‘people like them’ endorse and rely on.

That’s why ‘Buyability’ – the ability to reassure a buyer group that choosing your brand is defensible – will matter more than brand fame.

Signals such as peer adoption, expert endorsement, customer relevance, and third-party validation will outweigh feature lists and pricing claims. 

Crucially, these are the same signals that influence both human buyers and AI-driven discovery tools. Brands that fail to establish credibility early risk being excluded from consideration before sales or marketing teams even know an opportunity exists.

In 2026, the brands that win won’t be the most recognised – they’ll be the ones buyers feel confident standing behind.

What does this all mean?

B2B marketing is entering a credibility-led era.

As discovery becomes more automated and decision-making more cautious, trust will replace reach as the defining metric of influence.

Media platforms, publishers, B2B creators and subject-matter experts that offer authority, expertise and context – not just audience size – will become more valuable partners for advertisers navigating this change.

In a year where budgets are under scrutiny, credibility doesn’t replace investment – it’s what makes it pay off. And that’s a far higher bar for everyone.

Davang Shah is VP of marketing, LinkedIn