AI Marketing × B2B Companies
AI Marketing Agencies for B2B Clients (September 2026)
AI Marketing agencies with verified B2B client evidence — ranked by depth of documented work, then editorial quality.
Each listed agency evidences at least 2 documented B2B clients. Combined, the agencies below document 26 client engagements.
Ranked AI Marketing agencies for B2B clients
Rankings updated · Newest review
OstraconAI
Verified: the agency confirmed ownership from a company email address, and the listing passed editorial review#1Helsinki, Finland
Client evidence: 11 documented clients overall
Best for: Nordic marketing and sales teams that want AI tools built into HubSpot, Teams or Microsoft 365 and their own staff trained to run them.
Found
#2London, United Kingdom
Client evidence: 8 documented clients overall
Best for: UK consumer brands in retail, insurance and hospitality that want AI applied inside paid search, SEO and campaign data.
London, United Kingdom
Client evidence: 4 documented clients overall
Best for: Consumer and industrial brands that need marketing spend measured and modeled rather than an AI system built.
Graz, Austria
Client evidence: 3 documented clients overall
Best for: B2B and industrial firms that want to be named in AI answers and will fund a measured, ongoing program.
About this list
"AI marketing" sold to B2B buyers splits into measurement, visibility and tooling, and the firms on this page come at it from different ends.
Ekimetrics comes from measurement: two decades of marketing-mix modeling, with its most detailed published work—a climate-risk engine and a beauty-sector formulation system—anonymized. wukonig works visibility in AI assistants for industrial and B2B firms, with a published method: a fixed question set repeated across ChatGPT, Gemini, Perplexity and AI Overviews, scored against named competitors. Found runs AI-search tracking through its own Luminr platform alongside paid search and SEO, though no AI-answer outcome is published yet.
OstraconAI builds the tooling: an n8n and Gemini pipeline that scores and routes inbound leads into HubSpot for Singa, and AI-personalized outreach for Gosta Labs published with its full funnel—3,930 messages, 198 replies, 62 opportunities.
B2B marketing runs on long sales cycles, so the number that matters often lands after the engagement ends. Ask each candidate which metric they would commit to inside the contract period—pipeline, qualified leads, share of AI answers—and how it is measured independently of their own tooling.
Intro by Gabor Kiss, curator · How we rank
Expert Insight
Why B2B fit matters for AI Marketing
B2B AI lives inside operational systems, so integration experience is delivery experience—an agency that has shipped into an ERP or a ticketing queue has already fought the battles your project will fight.
Operational outcomes are checkable in a way marketing outcomes are not: handle time, error rate and hours removed either moved or they did not, and the strongest agencies here publish those numbers.
The internal business case matters—an agency whose case studies quantify results gives your sponsor the numbers to defend the budget with.
Frequently asked questions
4 agencies in our directory combine verified B2B client evidence with documented AI Marketing work. The current top-ranked are OstraconAI, Found, Ekimetrics — ordered by depth of documented client evidence, then our editorial scoring (portfolio quality, credibility, completeness); placement is never paid.
Published rates across this page's agencies run €85–400 per hour (median ~€216). Project totals depend on scope — the rate index at /rates breaks the computed bands down by region, country and team size.
Each listed agency has at least two documented, named B2B clients — published case studies or engagement descriptions our research actually read, with source URLs stored per client. Logo walls without published evidence carry no weight, which is what separates this list from self-declared directories.