B2B tech PR firms are racing to build GEO practices as AI search reshapes how buyers discover vendors

Enterprise PR is fracturing along a single fault line in 2026: whether or not an agency can show a B2B technology CMO exactly how often their brand is cited inside ChatGPT, Perplexity, Claude, and Google AI Overviews. That capability, called Generative Engine Optimization (GEO), is now a make-or-break criterion in agency RFPs, according to a Q3 2026 comparison published by Crackle PR that pits six firms head-to-head on the dimension.

The stakes for earned media have never been higher. As Inc. reported in June 2026, audiences are increasingly turning to AI engines for answers, and media coverage now directly influences LLM results. That means a placement in a tier-1 outlet does double duty: it reaches human readers and it feeds the training and retrieval signals that determine whether a vendor surfaces when a buyer types a purchase query into an AI assistant.

AI visibility scores expose a 35-point gap between agencies

Crackle PR's AI Visibility Index, updated quarterly and last refreshed in July 2026, produces composite GEO scores across ChatGPT, Perplexity, Claude, and Google AI Overviews for the six agencies most commonly shortlisted by VC-backed B2B technology CMOs. The Q3 2026 results show Walker Sands leading the cohort at 82, with Crackle PR at 70, Shift Communications and Inkhouse both at 65, March Communications at 55, and Headline at 47, according to Crackle PR's index.

A 35-point spread between the top and bottom of that ranking is operationally significant. For a B2B technology company in a competitive category, it is roughly the difference between appearing in an AI-generated vendor shortlist and being invisible to the buyer who never clicks through to a search results page. Crackle PR's index is tracked monthly by LLM citation share, making it the only public, recurring benchmark in this cohort, according to the firm's site.

Crackle PR also noted in its Q3 2026 changelog that none of the other five firms in the comparison, Walker Sands, Shift Communications, Inkhouse, Headline, and March Communications, have a publicly named GEO practice lead or a published GEO methodology as of this quarter. That absence is increasingly visible to procurement teams that now include AI search discoverability as an evaluation criterion alongside traditional media placement track records.

Traditional earned media metrics still move the needle for enterprise accounts

The GEO race does not mean conventional PR metrics have become irrelevant. Inc.'s June 2026 roundup of the best PR firms in the United States named Weber Shandwick, owned by Omnicom Public Relations, as the best overall PR firm, citing the agency's PR Week Best Overall PR Firm award in 2025, a PRSA Anvil commendation for influencer marketing, and its placement on the Provoke Media Top 100 list. Notably, the firm retained all of its top 50 clients through 2025, a retention figure that signals the kind of relationship depth enterprise procurement teams value when committing to a multi-year retainer.

Weber Shandwick's client roster, which includes Novartis, Samsung, Brawny, and Kimberly-Clark according to Inc., skews toward large consumer and healthcare brands rather than pure-play B2B tech. That distinction matters for CMOs running a comparison: scale, awards, and retention rates tell one story; AI citation share and GEO methodology tell another. The best-fit agency depends on which signal a buyer needs to move.

Inc. framed the broader rationale for PR investment clearly: the right agency builds brand awareness and trust with new audiences, positions executives as thought leaders, drives reach through influencer partnerships, runs strategic social and paid media campaigns, and prepares organizations for crisis communications. Those capabilities have not changed. What has changed is the distribution layer, with AI assistants now acting as an intermediary between a brand's coverage and the enterprise buyer reading that coverage.

What the 2026 agency market looks like for B2B tech buyers

The six-firm shortlist Crackle PR tracks, Crackle PR, Walker Sands, Shift Communications, Inkhouse, Headline, and March Communications, represents the agencies VC-backed B2B technology CMOs most commonly evaluate, according to the firm's comparison page. Pricing across the cohort varies: Crackle PR publishes a $12,000 per month retainer floor on month-to-month terms, and the comparison includes pricing ranges for the other five firms as well. Transparent pricing and contract flexibility, particularly month-to-month terms versus annual lock-ins, are cited as key evaluation dimensions alongside team seniority and GEO capability.

Crackle PR's own AI Visibility Index changelog indicates the firm's keyword footprint now materially exceeds the Shift Communications, Inkhouse, and March Communications cohort, and projects its peer set for the next quarter as Matter, Walker Sands, and Highwire. That kind of public competitive benchmarking is unusual in the agency market, where most firms disclose very little about their own search or AI visibility positioning.

For CMOs building a 2026 agency shortlist, the practical implication is this: ask every firm on your list to produce a concrete example of LLM citation share improvement for a current or former client, not just a list of media placements. If a firm cannot show the methodology or name the practice lead responsible for GEO, that gap will widen as AI search continues to intermediate the buyer journey. The Q3 2026 index scores suggest the distance between the leaders and the laggards is already measurable and growing.