Generative engine optimization services: what you are buying
What a GEO engagement should include, how to tell a substantive offering from repackaged SEO, and the deliverables worth insisting on.
Generative engine optimization services are sold by agencies, consultancies, and specialists, with scope varying widely. This article sets out what a credible engagement contains and how to specify one.
What should be in scope
A substantive GEO service covers four areas. If any is missing, ask why.
Measurement. A documented prompt set built from real buying questions, a baseline of your mention rate across the engines your buyers use, and competitors measured on identical prompts. This should exist within the first two weeks, frozen, and be checkable afterwards.
Retrievability. An audit covering server-side rendering, robots rules for AI crawlers, edge bot protection behaviour, index coverage, and response times. This is distinct from a standard SEO audit and a provider who does not raise it has not done this work before.
Content. Gap analysis identifying questions where competitors are cited and you are absent, restructuring of existing high-value pages for extraction, and only then new content. Providers who lead with a content volume commitment have the sequence backwards.
Off-site. A plan for the third-party sources that shape how models describe you — roundups, comparison pages, directories, and community discussion. Work confined to your own domain moves retrieval-driven citations and nothing else.
Deliverables worth insisting on
- The prompt set and competitor set, documented and frozen, with any change logged.
- Raw engine responses stored and accessible, so every reported metric can be checked.
- Per-engine reporting rather than a single composite score.
- A retrievability audit delivered before content is commissioned.
- A prioritised gap list with the competitor page currently winning each question.
- Full ownership and export rights over prompts, data, briefs, and content.
How to spot repackaged SEO
- Reporting is rankings with an AI section appended, and brand mentions in generated answers are never measured.
- Schema markup is presented as the primary mechanism for winning AI citations.
- The proposal guarantees placement in AI answers or a specific visibility score.
- Content volume per month is the headline deliverable.
- No baseline is established before work begins, which conveniently makes progress unfalsifiable.
What is reasonable to expect
Retrieval-side movement — being cited more often once pages are restructured and recrawled — typically shows within six to twelve weeks. Shifts in how models describe your brand from memory take two to three quarters and depend on the wider web rather than your site alone. Any provider promising a transformed AI presence in month one is measuring something trivial.
Pricing tends to reflect whether content production is included. An analysis-and-audit engagement is a fraction of the cost of one that also produces content, and conflating the two makes proposals hard to compare. Ask for the split explicitly.
In-house alternative
Much of the measurement side is tooling and process, and is feasible internally once someone owns it. The parts that benefit most from a provider are the initial diagnosis, where cross-account experience shortens the learning curve considerably, and the off-site work, which depends on outreach capacity. A common arrangement is an engagement for two quarters followed by a documented handover.
Common questions about GEO services
- What should GEO services cost? The range is wide, and the biggest variable is whether content production is included. An analysis, audit, and measurement engagement is a fraction of the cost of one that also writes content. Ask for the split explicitly so proposals are comparable.
- How is this different from an SEO retainer? A genuine GEO engagement adds three things a standard retainer does not: measurement of brand mentions in generated answers, a retrievability audit covering AI crawler access and rendering, and off-site work aimed at the sources that shape how models describe you.
- Can I buy GEO services without changing my SEO agency? Yes, and it is a common arrangement. The risk is contradictory guidance on the same pages, so agree who owns technical changes before starting.
- How do I know it is working? Mention rate and competitor gap on a frozen prompt set, trended over at least eight weeks, with the raw engine responses available to check. Insist the baseline is documented and signed off before implementation begins.
- Is it worth it for a small company? The measurement half is inexpensive and often revealing. The content and off-site half is where the cost sits, and it scales with how contested your category is.
- What if my category is not discussed in AI assistants yet? Then the honest answer is that the opportunity is small today. Measure it, keep the prompt set, and revisit quarterly rather than committing to a large programme.
Tip: ask any prospective provider to run five of your buying questions through two engines before the pitch and bring the answers. How they interpret what comes back — particularly the unflattering parts — is a better signal than any case study.
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