SEO Agency Plus GEO Specialist vs. One Combined Service: Who Owns the Result?

Most agencies will not tell you this: you do not have a Google problem and a ChatGPT problem. You have one visibility problem wearing two labels. If AI Overviews have eaten into your clicks, your choice is between three setups: an SEO agency plus a separate GEO/AEO specialist, your current SEO agency with AI added to its proposal, or one combined SEO and AI search service.

I spent years mining negative keywords at 1am and watching rankings tank because a client swapped a landing page without telling me. I know what the underlying work looks like. Roughly two thirds of SEO and AI search is the same job: pages that answer buyer questions, technical fixes so engines can fetch them, and citations they trust. Pay two vendors and you risk paying for that work twice. Then you get two reports that both claim the win. For most businesses, one combined service wins on cost and accountability. I will show you the math, then tell you when I would still keep two vendors.

The three setups you are actually choosing between

• A: SEO agency plus a separate GEO/AEO specialist. You keep your SEO retainer and add another for mentions in ChatGPT, Perplexity and AI Overviews. Published US GEO retainers cluster at $1,500 to $5,000 a month for SMBs, $5,000 to $10,000 for mid-market businesses, and $10,000-plus for enterprise. Productized lists include The HOTH at $1,500 to $10,000 and WebFX AI search from around $2,250 a month upward (GEO pricing examples).
• B: Your SEO agency with AI added to the proposal. Same vendor, new line item. In Malaysia, that add-on runs RM 2,000 to RM 3,000 a month on top of SEO. UK buyers are told to reserve 15 to 25% of SEO spend for AEO, with answer-engine work adding 20 to 50% to traditional cost (GEO add-on pricing).
• C: One combined SEO and AI search service. One team writes the pages, ships technical fixes and builds citations once, then answers for Google rankings and AI mentions. groas offers that combined service for $1,499 a month flat, month to month.

Name the setup before you compare prices. B likes to dress up as C, but one invoice alone does not tell you whether the work has been combined.

Axis 1: Are you buying the same work twice?

Ask both vendors for their task lists and lay them side by side. Both may audit crawlability and page speed. Both may rewrite thin service pages into direct answers, add schema markup, fix internal links and pursue citations on sites the engines trust. Practitioner guides put the shared core at 60 to 80% of the work, while another puts it at about 60% shared. A Perth breakdown calls it roughly two thirds overlap. The precise share matters less than the duplicated deliverables on your proposals.

That is why a familiar complaint rings true: the SEO retainer works for rankings, but leadership now wants a GEO line item on top. A new name for the work does not make the work new.

There is distinct AI-search work. A mature SEO program is already about 60% of the way to AI visibility before it starts, but it may have skipped Wikipedia and entity work, Reddit and community presence, sentiment framing, and tuning for live retrieval. Classic SEO often ignored Reddit because its links are nofollow; LLMs can still give that conversation weight. That is a reason to define a narrow new scope, not automatically to fund a second full program.

Practical takeaway: if vendor two proposes rewriting pages vendor one just rewrote, ask what changed besides the invoice.

Axis 2: What is the total monthly bill?

Say you spend $2,500 a month on SEO. That sits within the published $1,500 to $5,000 monthly range for SMB SEO retainers. Add a GEO retainer at $1,500 to $5,000 and you are paying $4,000 to $7,500 a month across two vendors. Across those quoted ranges, the combined bill can run from $3,000 to $10,000 a month.

I used to tell clients that kind of bill was just what visibility cost. I was wrong. A second specialist may earn its fee if the scope is genuinely different. But if both retainers include the same page rewrites, technical fixes and citations, part of the second bill pays for overlap.

The small-budget version hurts most. At $1,500 for SEO and $1,500 for GEO, you reach $3,000 a month before deciding who gets to edit the service pages. At $2,500 for SEO and $1,500 for GEO, you reach $4,000. A combined SEO and AI search service from groas is $1,499 flat. Those prices are not a substitute for checking the proposed scope, but they are a good reason to check it closely.

Practical takeaway: compare the total bill against the work that will ship, not the number of specialists named in the proposal.

Axis 3: Who gets credit when enquiries rise?

With two vendors, you can get two PDFs and zero answers. The SEO agency reports that three keywords moved from position 9 to 4. The GEO specialist reports that your brand appeared in 14% of tracked prompts, up from 9%. In this example, both reports arrive in a week when enquiry volume is flat. Both vendors claim the two extra calls you did get.

The mechanism is simple. Rankings tools measure where your pages sit. Citation trackers measure where your brand gets named. Neither tells you how much booked work followed unless someone connects the reporting to your CRM. Run rankings and AI citation dashboards side by side without one owner for the outcome, and each vendor can point to the chart that flatters them.

Contracts can make that harder to resolve. GEO programs often carry 3-to-6-month minimums, while your SEO retainer has its own term. If the work overlaps and results disappoint, you may not be able to stop paying for the overlap quickly.

A single provider does not magically make every enquiry attributable. It does remove the argument over which vendor was supposed to act. If neither report ends in enquiries, you bought monitoring, not marketing. Ask who owns the number, who can change the work, and what happens when the number stays flat.

Axis 4: How fast can anyone ship a page?

Two vendors do not always work in parallel. Sometimes they wait on each other. The GEO specialist wants a service page rewritten for a ChatGPT prompt. The SEO agency owns the page and has its rewrite queued for next month. Nobody publishes until both approve the headline. A change that should take two days takes three weeks.

That stall is built into the overlap: pages cited by AI engines often already rank well in classic search, so both vendors have reason to work on the same URLs. One tightens copy for a keyword. The other loosens it so an answer engine can quote it cleanly. The page goes back and forth while competitors ship.

I have lived inside that kind of queue. It does not matter whether each proposed edit is defensible. The page still needs one decision-maker. A combined team can make both edits in one pass and move to the next page. If you keep two vendors, give one person final approval and make the handoff explicit.

Practical takeaway: count approvals, not headcount. A specialist who cannot publish is another person in the queue.

Axis 5: Who answers when traffic and enquiries part ways?

AI Overviews make this more than an argument about reporting style. When they appear, the top-ranking page gets about 58% lower click-through, and one multi-organization study watched organic CTR slide from 1.76% to 0.61%. Overviews triggered in 25.11% of searches in Q1 2026 versus 6.49% in mid-2024. Rankings can hold while clicks fall. Mentions can rise while the phone stays quiet.

With two vendors, each can point at the metric it controls. The SEO agency says rankings are stable. The GEO specialist says mentions are up. Neither has to own the gap between those charts and your booked jobs. Setup B can produce the same problem under one logo if the new AI line item brings a second vanity chart rather than a shared target.

One owner has less room to run that play. I would judge a combined service the way I judged my own accounts at 1am: did qualified enquiries rise against the same spend, yes or no? groas pairs new pages and technical fixes every day with one manager answering for the result. That gives you a person to ask not just what moved, but what the team will change next.

Practical takeaway: make one owner responsible for enquiries. If two vendors can both claim a win and neither owns a loss, you hired coverage, not accountability.

Verdict: one owner beats two reports

For most small and mid-size businesses reading this, C wins. You do not need to fund overlapping page work or referee edits between vendors just to cover Google results and AI answers. Put the shared work under one roof, then judge that roof on enquiries. That is the case for a single provider instead of two agencies billing for overlapping work.

When I would keep two vendors anyway

There are two cases where I would pick A over the combined service:

1. Your SEO agency is genuinely strong. Rankings are climbing, pages ship on time, and its monthly report ties work to calls rather than positions. I would not fire a team that ships just to eliminate overlap. I would hire a narrow AI specialist for a 90-day project covering work the SEO team admits it does not do: entity cleanup, Reddit presence and prompt coverage.
2. AI search is a small side project. You might be a national brand testing whether ChatGPT and Perplexity deserve budget next to AI Overviews, or an agency running a margin test on one partner versus two. Keep the new scope narrow, the contract short and one person in charge of page-edit decisions.

Outside those cases, the split is overhead you pay for every month. If your existing agency wants to become setup B instead, make it show its work.

Five questions that expose an AI add-on

If your SEO agency says it now does AI search, ask these before signing the new line item. Honest answers sound like work plans. Evasive ones sound like what the deck calls synergy. I call it two people doing the same job.

1. Which pages will you rewrite specifically for AI citations that you would not have rewritten for rankings, and why?
2. How many new pages and technical fixes will ship each week, and who approves them?
3. Which third-party sites will you pursue for mentions in the next 60 days, beyond the directories we already have?
4. How will you report enquiries from AI answers separately from organic form fills, in numbers I can check in the CRM?
5. If mentions rise and enquiries stay flat for two months, what changes, and who owns that change?

If you lost traffic when Overviews expanded and leadership now wants a GEO line item on top of an SEO retainer, do not buy the same hours twice. Put buyer questions, technical fixes and citations under one roof. Keep two vendors only when the first one earns its place and the second one stays small. Everyone else should hire the setup where one manager gets the page written, gets it cited and answers for the enquiries that follow.