When AI Does the Buyers' Homework, Is Your Brand in the Answer?

A while back, a friend of mine who runs B2B software invited me out for tea.

He looked genuinely puzzled: website traffic had barely dropped, content was still going out on schedule, yet new leads kept shrinking year after year. Refusing to accept it, he went and asked a few recently signed customers: how did you research us in the first place?

The answers were strikingly uniform.

First stop: ChatGPT.

My heart sank a little.

Think about it. A buyer who wanted to understand you used to open a search engine, scroll through a dozen blue links, and read article after article until their eyes ached. Now? They open ChatGPT, type in something like "which vendors in this category are worth a look," and in three seconds the AI hands back a tidy answer with three to five brand names, spelled out plainly.

And what if you're not among those names?

If you're not, you don't exist.

The verdict is delivered before the buyer ever reaches your website.

So over the past two years, three letters keep showing up on marketing meeting agendas: GEO. Agencies selling this line of business have sprouted by the handful. I dug into twelve of the louder names, one by one. Here's what I found.

What Exactly Is GEO?

Generative Engine Optimization.

In plain terms: old-school SEO was about getting search engines to rank your link on page one. GEO is about getting AI — at the very moment it composes an answer — to cite you, mention you, and, what's more, get you right.

Note that last part: get you right.

I've seen brands whose names really do appear in AI answers — described as "an established vendor with somewhat steep pricing." Mentioned, yes. Mentioned in a way that makes you want to cry.

Real GEO does four things: rolls out the technical red carpet for AI crawlers; organizes content so machines can actually read it; builds authority bit by bit inside the sources AI trusts; and then manages the business of "being cited" with precision.

It moved past keywords a long time ago. Keywords are for humans; citations are for machines.

Here's an analogy. Old SEO was setting up your stall at the busiest crossroads of the marketplace — the louder you shouted, the more people came. Now, customers entering the market go straight to the all-knowing shopping guide. Whoever the guide praises is who they go see. Your stall could be gorgeously decked out, but if the guide never brings you up, customers simply never make it to your door.

AI is that guide. A guide who stands watch around the clock — and accepts no gifts.

GEO vs. SEO: What's the Difference?

SEO optimizes rankings — laid out on a search results page, visible, measurable. GEO optimizes citations — buried inside AI-generated answers, hard to measure, fast-changing, and far more dependent on your entity authority and structured data.

But the foundation is the same. Content that is clearly structured, genuinely substantive, and logically organized wins on both fronts. The difference is that GEO has to add entity optimization, schema markup, and citation building on top of that foundation.

In one line: SEO gets people to find you; GEO gets AI to remember you.

First, How to Pick; Then, the List

Before the list, let's get four measuring sticks ready. No matter how gorgeous an agency's deck looks, measure them against these four:

1. Real results, or not. Don't swallow lines like "deeply rooted in AI search." Demand cases: which client did you get into which AI answers, and what did the numbers look like before and after? Anyone who can't produce that — pass.
2. Can they actually explain the technology? How large language models retrieve information, how semantic search works, what RAG (retrieval-augmented generation) is — they should be able to explain these clearly, not hit you with a wall of jargon.
3. Do they have their own tools or methods? Proprietary software for tracking AI visibility, or a methodology they can articulate. If it's all manual labor plus gut feel, walk away early.
4. Does the strategy connect to revenue? Be wary of anyone who only talks about exposure and buzz. If you're going to talk, talk pipeline. Talk closed deals.

One more glance while you're at it: does the company keep publishing its methods in public? People who truly love this craft can't hide it.

And then there's one hard line.

If any agency thumps its chest guaranteeing "you will absolutely show up in ChatGPT's answers," turn around and walk. The platforms hold their own models and citation logic, and they change them every few days — nobody can guarantee that. Anyone who claims they can is lying to you. What a trustworthy agency does is push up your probability of being cited, bit by bit.

Good. Sticks in hand, on to the list.

The Twelve, Matched to Your Situation

Small team, tight budget, want to spend a little first to see where you stand? Look at Digital Elevator.

Founded in 2010, they've spent roughly fifteen years serving everyone from startups all the way to the Fortune 100, and later unbundled their services into flat-rate products with clearly written scope. Their best-known move is a 30-day AI Visibility Report: it sweeps your presence across ChatGPT, Perplexity, Gemini, and Google AI Overviews, then spells out where the gaps are and which citations and authority you need to shore up.

I particularly admire one of their calls: this market is still immature, the rules are still being written, and locking clients into a 12-month contract right off the bat isn't exactly playing fair. So they lay the road out and let you choose: buy flat-rate single services — content strategy, link building, page redesigns — exactly as much as you need, no long contract attached; or run a 30-day AI visibility project to test the waters quickly; and if you truly want to accumulate organic search over the long term, there's a 12-month managed program covering content, links, and reporting.

As for the GEO work itself, the weight falls on bottom-of-funnel content that AI can cite, structured data that props up entity authority, and the technical details that decide whether an LLM can read your website cleanly. Their client list includes McKesson, Waters Corp, Champions Oncology, Harmonic, and DuvaSawko.

Need the full package, at scale? Look at Graphite.

There's a line of theirs I love: find the critical 5%. SEO work sprawls in a thousand directions, but maybe only 5% of it actually works — use AI to strip out the waste in the rest. Brilliant. They've built their own platform that puts search-engine and generative-model performance in a single frame; their teams are fully staffed from editorial, programmatic, and AEO (answer engine optimization) through technical and paid. MasterClass, Calm, Robinhood, BetterUp, and Honey have all been their clients.

Selling B2C software and want AI to recommend you outright? Look at Notebook Agency.

Their signature is the Trust Alignment Framework, and the goal is blunt: make your brand what AI recommends, not just one of the alternatives. The team brings 67 years of combined experience, from engineers to computational linguists, plus a stockpile of 300-plus playbooks they mix and match for settings like Google AI Mode and ChatGPT; they claim to have generated more than $200 million in cumulative client revenue. Clients include Purple Mattress, Cirque du Soleil, Mejuri, and FreshBooks.

Need enterprise-grade backlinks and authority? Look at uSERP.

This firm believes exactly one thing: organic growth that doesn't bring in revenue is meaningless. They concentrate firepower on the signals that actually move rankings: authoritative backlinks, content relevance, long-term trust. They also go after commercial pages and keyword positions that convert — vanity traffic need not apply. Every project is led personally by a senior SEO, all work done in-house, like an extension of your internal growth team. Clients include Monday, CrowdStrike, HighTouch, and OnBoard.

Is Europe your main battlefield? Look at Omnius.

They specialize in European B2B SaaS and fintech, for over a decade now, and they know the economics of subscription businesses inside out. They've built their own analytics software called AtomicAGI, tracking brand visibility and citations across AI platforms in real time; they hold more than 20 tactics, from AI crawler optimization and LLMs.txt files to citation engineering and synthetic query generation, executed with real granularity. Clients include TextCortex AI, Anna Money, Zencoder, AuthoredUp, and Signify.

Enterprise B2B with a long decision chain? Look at Directive.

They shape content architecture into forms AI can read, then accumulate the authority signals AI favors, braiding technical SEO, content intelligence, and digital PR into a single rope. The goal is to get your content into the answers of models like ChatGPT and Gemini, with a particular eye on the moments when enterprise decision-makers use AI for research and procurement. Staying visible in zero-click, AI-summarized search experiences — that's their home turf. The client list isn't public; if you want it, remember to ask.

Believer in content is king? Look at Animalz.

Veterans of B2B SaaS content marketing, they weave AEO and GEO directly into the content production process. First comes an AI visibility audit, benchmarked against competitors, which yields a 90-day execution roadmap. Their hardest-edged skill is deep interviews with genuine experts, which lend the content real authority — making it hard for AI to cite around you. Every piece they produce, from AEO-optimized blogs and ebooks to thought leadership content, is required to hold up in both traditional search and AI answers. Clients include Zendesk, GoDaddy, Intercom, Wistia, and Retool.

Running a SaaS and need real, tangible leads? Look at Skale.

They run generative search as a predictable acquisition channel, not as an isolated little tactic: a structured content system, entity authority, technical optimization, then trust signals scattered across the whole web; they've built their own AI attribution framework, connecting "citation visibility" directly to pipeline and revenue. The more complex a SaaS company's buyer journey, the harder this approach works for them.

Big brand, wanting content that compounds over time? Look at Siege Media.

An old-school content marketing company that has carried everything it built straight into the generative era. The logic is simple: wherever users search, content must show up there — whether it's a keyword on Google or a complex question inside ChatGPT. Instacart, Figma, Zoom, Asana, and Tripadvisor are all on their client list.

Huge content library that machines can't read? Look at Intero Digital.

Founded in 1996, close to three decades now. Their signature trick is a crawler simulator called InteroBOT, which simulates how generative engines and traditional crawlers evaluate your content, unearthing, one by one, the technical issues that keep machines from reading you. Enterprises with complex site structures and massive content need this kind of checkup most. Clients include Tamron, Quantum Health, and Zayo.

Site architecture so complex it's intimidating? Look at iPullRank.

Top-spec players in enterprise technical SEO, they wrote an AI Search Manual that gets cited over and over in the industry. Their core strengths are JavaScript rendering, log-file analysis, and large-scale site architecture; they claim more than $4 billion in cumulative organic search outcomes. Sit with that number for a second. In their process, generative optimization is the main storyline, not an elective. Clients include American Express and Citi.

Big brand that only trusts data and evidence? Look at Go Fish Digital.

The most unusual of the bunch: the team seriously studies Google's patents, applies the mechanisms inside the patents directly to client strategy, and pairs it with self-developed, backtested technology. Put plainly, it's reverse-engineering how AI retrieves, ranks, and presents — then working backward to what you should do. GEICO, Wayfair, Jelly Belly, and About Amazon are all on the client list.

So, What Does It Cost?

Let's do the math.

Decent GEO service runs $2,000 to $10,000 a month in the mid-market, more at the enterprise level. Sounds steep?

Think of it another way. The priciest part of that spend is what it takes to earn real mentions inside authoritative sources. Digital PR, being cited, being republished — most expensive, and most durable. A mention earned today is still speaking for you tomorrow.

Teams on a tight budget can start with a fixed-scope diagnostic project — that 30-day report, for instance — to first see clearly what you look like in AI's eyes, then decide how much to invest.

Back to That Cup of Tea

My friend eventually went and got an AI visibility diagnosis.

The day the report came out, he sent me a message: turns out that in ChatGPT's eyes, their company is tied to "expensive," and has little to do with "good."

He went silent for a while, then added: no wonder leads keep getting more expensive.

The shift has already happened. The way buyers do their homework isn't going back.

Whoever writes themselves into AI's answers first will receive the next wave of customers first.

May your brand, in every AI-generated answer, be mentioned accurately — and well.