To choose an AEO agency, test three things: how they measure AI visibility (baseline methodology and citation tracking), whether their tactics go beyond repackaged SEO (entity strategy, citation-source work), and whether a practitioner or a junior team runs your account. Walk away from anyone guaranteeing ChatGPT rankings.
An answer engine optimization agency's job is to get your brand mentioned, cited, and recommended when AI engines — ChatGPT, Perplexity, Gemini, Google AI Overviews — answer your buyers' questions. If you want the full discipline explained, start with our guide to answer engine optimization; in an engagement, the work typically breaks down into five streams:
The measurement stream is what separates real AEO shops from pretenders — which is why most of the questions below attack it.
Before comparing agencies, decide whether an agency is even the right vehicle. The honest trade-offs:
| Option | Strengths | Weaknesses | Best for |
|---|---|---|---|
| AEO agency | Process maturity, tooling, cross-client pattern recognition, capacity to execute | Cost; risk of junior delivery behind a senior pitch; generic playbooks | B2B SaaS with budget that needs strategy plus execution |
| Freelancer / consultant | Senior attention, lower cost, flexible scope | Limited capacity; single point of failure; may lack measurement tooling | Focused projects, audits, advisory alongside an internal team |
| In-house | Deep product knowledge, full-time focus, compounding institutional learning | Hard to hire for a young discipline; salary plus tools; no external benchmark | Larger companies making AI visibility a permanent function |
Hybrids are common and often optimal: an external audit to set the baseline and roadmap, then in-house or freelance execution with periodic outside review.
Ask all of these. The pattern in the answers matters more than any single response:
Any one of these is disqualifying:
Briefly — we cover this in depth in our AEO pricing guide. Published market guides — Digital Elevator's AEO/GEO pricing survey among them — put credible mid-market retainers roughly in the $2,000–$10,000/month band, with enterprise programs running higher and suspiciously cheap retainers frequently being rebranded SEO. Fixed-scope diagnostics are the low-risk entry point: our AI Visibility Audit is $4,500 with a two-week turnaround, and it's designed to make whatever you do next — with us or anyone else — measurable.
Whatever the number, insist that pricing maps to a scope you can inspect: engines covered, prompt-set size, content and entity deliverables, reporting cadence.
AEO is young. There is no decade-old playbook, which means your results depend on the judgment of whoever actually runs your account — not the agency's brand. Large retainers at generalist shops routinely fund account managers, status meetings, and junior execution while the senior strategist from the pitch disappears after kickoff.
In the audits we run at Helix Apps, we regularly inherit accounts from big-retainer engagements where months of invoices produced no baseline and no measurable share-of-voice change — activity reports, but no evidence. A boutique, practitioner-led model inverts that: the person with 15+ years of enterprise search experience designs the prompt set, reads the model outputs, and writes the roadmap. You're paying for judgment density, not headcount. That's the model behind our AEO services, and it's why we push every prospective client toward a fixed-price AI visibility audit first — it proves the methodology before you commit to a retainer anywhere.
An answer engine optimization (AEO) agency helps brands get mentioned, cited, and recommended by AI answer engines such as ChatGPT, Perplexity, Gemini, and Google AI Overviews. The work spans prompt-set benchmarking, entity and schema optimization, citation-worthy content, and earning presence on the third-party sources AI engines trust. Unlike a traditional SEO agency, its success metric is presence in generated answers, not keyword rankings.
No. LLM outputs are probabilistic and no agency controls what OpenAI, Google, or Perplexity generate. A credible agency guarantees process and measurement — a defensible baseline, a prioritized roadmap, and transparent reporting on mention and citation rates — not specific outcomes. Any firm guaranteeing you will appear in ChatGPT answers is either naive about how LLMs work or hoping you are.
Published market guides place credible mid-market AEO retainers in roughly the $2,000 to $10,000 per month range, with enterprise programs above that. One-time audits and project engagements cost less than ongoing retainers; Helix Apps prices its AI Visibility Audit at $4,500 with a two-week turnaround. Be skeptical of very cheap retainers, which are frequently rebranded traditional SEO.
An SEO agency optimizes for position in a ranked list of links and measures keyword rankings and organic traffic. An AEO agency optimizes for inclusion in AI-generated answers and measures mention rate, citation rate, sentiment, and share of voice across engines like ChatGPT and Perplexity. The disciplines overlap on technical foundations and content quality, but the targets, tactics, and measurement systems differ.
Expect early movement in one to three months and meaningful share-of-voice change over three to six months, depending on your starting authority and category competitiveness. Some changes, like fixing schema or correcting how engines describe your product, can show up within weeks; earning citations on the third-party sources AI engines trust takes longer. Any agency promising dominant AI visibility in weeks is overselling.
Audits, retainers, and project work — what answer engine optimization actually costs.
What a rigorous audit includes, deliverables, timeline, and cost.
The complete guide to AEO: how it works and why it's replacing blue-link SEO.
Our $4,500 AI Visibility Audit delivers your baseline, competitor share of voice, and a prioritized roadmap in two weeks. It's the lowest-risk way to test whether an AEO partner's methodology holds up.