geoagencies

Agencies Offering Source-of-Truth Content

GEO Agencies That Build Source-of-Truth Content

Source-of-truth content is written to be cited by a model as well as read by a person. It carries clear claims, consistent facts, and structure a model can pull from directly. These agencies build it.

Most content on the web is written for a reader who arrives with context. A model pulling facts to answer a prompt has none of that context, so it needs a clear, self-contained claim it can quote or paraphrase with confidence. Source-of-truth content is written with that in mind, usually alongside entity and schema work so the same facts are marked up in a way a model can parse, not just written in prose.

This shows up in practice as rewritten product pages, dedicated FAQ and comparison content, and documentation restructured so a single page answers a single question clearly. The agencies below build this kind of content as part of their GEO work, alongside the other services shown on each profile.

38 GEO agencies
B2B AI visibility for UK hospitality · London, UK · 10-49 staff

London software company that gets UK hotels, restaurants and other businesses named by ChatGPT, Gemini and Google AI Overviews.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews · AI Mode
Pricing: Monthly retainer
Verified
B2B GEO for Danish businesses · Odense, Denmark · 1-9 staff

Odense GEO consultancy getting Danish businesses mentioned and recommended in ChatGPT, Gemini and Google AI Overviews.

Engines: GPT · Gemini · AI Overviews
Pricing: Monthly retainer
Claimed
B2B Omnichannel GEO · Winterswijk, Netherlands · 10-49 staff

Dutch agency that measures which brands AI answers name and cite, then publishes and distributes content across 20+ channels to change that.

Engines: GPT · Gemini · Perplexity · AI Overviews
Pricing: Monthly retainer
Claimed
B2B GEO and SEO websites for B2B · Hamburg, Germany · 1-9 staff

Hamburg team building B2B websites with structured content, technical SEO and AI-citable answers for ChatGPT and Perplexity, alongside workflow automation.

Engines: GPT · Perplexity
Pricing: One-off / project
Claimed
B2B AI visibility and SEO ·

Productized AI visibility and SEO service working on technical foundations, answer-ready content, entity evidence and earned authority, with measurement published as part of the offer.

Claimed
B2B B2B SaaS GEO · Bloomington, US

Indiana agency measuring and improving how B2B software companies appear in AI answers, starting from a fixed-price category audit across five engines.

Engines: GPT · Claude · Perplexity · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B GEO for B2B SaaS · Islamabad, Pakistan · 1-9 staff

GEO agency for B2B SaaS, measuring how often ChatGPT, Perplexity, Gemini, Claude, Copilot and Google AI Overviews name a brand and fixing the layer that keeps it out.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews
Pricing: Project or retainer
Claimed
B2B GEO for Dutch and Belgian businesses · Diemen, Netherlands · 1-9 staff

Dutch GEO agency making websites findable, understandable and citable for ChatGPT, Claude, Copilot, Gemini, Perplexity and Google, for businesses in the Netherlands and Belgium.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews
Pricing: Project or retainer
Claimed
B2B GEO for Spanish B2B SMEs · Madrid, Spain · 1-9 staff

Spanish AI visibility agency combining GEO and technical SEO for B2B SMEs, measured per engine on a fixed set of buyer questions at day 0 and day 120.

Engines: GPT · Claude · Gemini · Perplexity
Pricing: Monthly retainer
Claimed
B2B SEO and AI visibility consultancy · Buenos Aires, Argentina · 1-9 staff

Boutique SEO and AI visibility consultancy helping service-based brands become easier to find, trust and choose.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B GEO for managed IT and cybersecurity · Chennai, India · 1-9 staff

Gets managed IT, cybersecurity and software firms named in the answers ChatGPT, Perplexity, Gemini and Claude write, and reports the change in share of answer weekly.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B AI visibility for building-product makers · Bayham, Canada · 1-9 staff

Makes building-product manufacturers readable to AI assistants, so their name comes up when contractors ask which product to specify.

Engines: GPT · Claude · Gemini
Pricing: Project or retainer
Claimed
B2B GEO for Brazilian B2B brands · São Paulo, Brazil

Brazilian GEO agency getting B2B brands cited and recommended in ChatGPT, Gemini, Perplexity and other AI answers, led by a 17-year SEO practitioner serving all of Brazil from São Paulo.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B GEO for German SMEs · Ostfildern, Germany

German GEO agency working on AI search visibility and AI Overview citations for German-speaking clients, from Ostfildern near Stuttgart.

Claimed
B2B AI visibility for travel businesses · Barbados · 1-9 staff

AI visibility and search positioning for travel businesses, showing whether a travel brand makes the shortlist when travellers ask Google and AI assistants who to book with.

Engines: GPT · Gemini · Perplexity
Claimed
B2B AI-optimised SEO for Dallas businesses · Dallas, US

AI division of Dallas IT services firm ITECS, running technical SEO, content architecture and measurement of AI search visibility for local businesses.

Engines: GPT · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B SEO and AI search for manufacturers · US

Search agency for US manufacturers, distributors and industrial suppliers, working on how engineers and procurement teams find them through Google and AI answer engines.

Claimed
B2B GEO for law firms · Irvine, US · 1-9 staff

Generative engine optimization for US law firms only, getting firms named when clients ask ChatGPT, Perplexity, Google's AI answers, Gemini and Claude who to hire.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B Answer engine optimization · London, UK

Answer engine optimization agency working on how brands are cited and recommended across ChatGPT, Claude, Gemini and Perplexity, with prompt mapping, content and weekly tracking.

Claimed
B2B GEO for Korean businesses · Seoul, South Korea

Korean GEO agency that builds AI-readable websites and content for clinics, professional firms and brands, checks every post against Korean advertising law, and measures AI mentions weekly.

Engines: GPT · Claude · Gemini · Perplexity
Pricing: Monthly retainer
Claimed
B2C AI reputation for Web3 and fintech · Batumi, Georgia · 1-9 staff

Earned media, original research and technical site work aimed at getting Web3 and fintech brands named inside AI answers.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Monthly retainer
Claimed
B2B AI search and brand discoverability · Johannesburg, South Africa · 10-49 staff

AI search and brand discoverability agency working on generative engine optimization, entity clarity, AI-ready content and visibility measurement across the major assistants.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews · AI Mode
Pricing: Monthly retainer
Claimed
B2B Technical GEO for German businesses · Mönchengladbach, Germany · 10-49 staff

German digital agency in Mönchengladbach and Düsseldorf running GEO audits and the technical set-up that makes sites citable in ChatGPT, Perplexity and Google's AI answers.

Engines: GPT · Perplexity · AI Overviews
Pricing: One-off / project
Claimed
B2B Managed AEO · Newark, US · 1-9 staff

Managed AEO service for SMBs and growing brands: one team writing, placing and measuring the content that gets a brand named in AI answers.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews
Pricing: Monthly retainer
Claimed
B2B Dedicated GEO retainers · New Delhi, India · 1-9 staff

New Delhi GEO agency that tests real buyer questions in ChatGPT, Gemini and Perplexity, then improves the content, business information and third-party pages those answers rely on.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B SEO, AI visibility and paid ads · Cape Town, South Africa · 10-49 staff

Cape Town search and performance agency running SEO, AI visibility and paid ads for clients worldwide, with a focus on home service businesses.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Monthly retainer
Claimed
B2B GEO for financial brands · San Francisco, US

Financial services marketing agency running compliance-aware GEO and AEO for brokers, crypto exchanges and other regulated financial brands.

Engines: GPT · Perplexity · AI Overviews
Pricing: Monthly retainer
Claimed
B2C AI visibility for Slovak SMEs · Bratislava, Slovakia · 1-9 staff

Two-person Bratislava agency preparing small and medium-sized Slovak businesses for ChatGPT, Gemini and Perplexity, with monthly checks of what the assistants recommend.

Engines: GPT · Gemini · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B SEO and AI visibility for B2B and SaaS · Ahmedabad, India · 1-9 staff

SEO and AI visibility agency for B2B companies, SaaS and startups, getting brands ranked on Google and recommended by ChatGPT, Perplexity, Claude, Gemini and Google's AI answers.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews · AI Mode
Pricing: Monthly retainer
Claimed
B2B AI search visibility for manufacturers · Katowice, Poland · 1-9 staff

Polish interactive agency building AI search visibility for B2B manufacturers, with an AI search audit and a GEO suite covering quotable content, structured data and earned mentions.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B GEO and AEO · Remote · 1-9 staff

GEO-native agency that gets brands cited and recommended inside AI answers, measured per engine every 30 days on a locked prompt set.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Project or retainer
Claimed
B2B Answer engine optimization for B2B · Aarhus, Denmark · 1-9 staff

Done-for-you answer engine optimization for B2B companies, measured on a fixed question set across five engines and re-measured on a set cadence.

Engines: GPT · Gemini · Copilot · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B AI visibility for private clinics · Twickenham, UK · 1-9 staff

Doctor-led AI visibility agency helping private medical and dental practices get named when patients ask ChatGPT, Gemini and Google's AI answers which clinic to choose.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B Full-service search & GEO · Sheffield, UK · 50-199 staff

Employee-owned search agency in Sheffield and Leeds with more than 80 specialists, running GEO and AEO as named services alongside SEO, digital PR, content and paid search.

Engines: GPT · Claude · Gemini · Perplexity · Copilot · AI Overviews · AI Mode
Pricing: Project or retainer
Claimed
B2B GEO for B2B niches · Lewes, US · 1-9 staff

B2B GEO agency that audits how AI systems describe a brand to buyers, then closes the gaps across its own content, third-party sources and positioning.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: Monthly retainer
Claimed
B2B AI visibility for local service businesses · Columbus, US · 1-9 staff

Ohio firm measuring sampled AI answers for independent businesses and fixing the pages and profiles that explain them, from a $750 audit.

Engines: GPT · Claude · Gemini · Perplexity · AI Overviews
Pricing: One-off / project
Claimed
B2B GEO for cross-border brands entering the West · Nanjing, China · 10-49 staff

Helps brands win visibility, authority, citations and recommendations across AI answer engines in the United States, United Kingdom and Europe.

Engines: GPT · Claude · Gemini · Perplexity · Copilot
Pricing: Project or retainer
Claimed

Common questions

How is this different from normal content marketing?

Normal content marketing is written to engage a reader over several paragraphs. Source-of-truth content is written so a specific fact or claim can be lifted cleanly by a model, which usually means shorter, more direct, and more structured than a typical blog post.

Does this replace SEO content?

Not usually. Most agencies treat it as an addition. Existing SEO content stays for human readers and rankings, while source-of-truth pages are added or rewritten for how models retrieve facts.

Which agencies are listed here?

Agencies in the directory whose own site names this kind of content work as a service.

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