Answer engine optimization is a real service category now, which means the agency landscape has filled up fast with a mix of real operators, rebadged SEO shops, and outright scammers. This post is a buyer’s guide for picking one without getting burned.

What a real AEO agency actually does

Before you evaluate agencies, understand what the work is. A legitimate AEO program has four components.

Content work. Writing, editing, and optimizing pages on your site so they answer specific questions in the format AI products prefer. Structured, specific, and well-cited.

Press and citation work. Earning coverage in publications that feed into AI training data and retrieval systems. This is the heaviest lift in any AEO program and the part most agencies underinvest in.

Entity and technical work. Schema markup, Wikidata entries, Crunchbase profiles, and other structured data that makes your entity legible to knowledge graphs and crawlers.

Measurement. Running prompt inventories across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews to see whether the work is moving your visibility and framing.

Any agency that doesn’t cover all four components is doing partial work. The partial work is sometimes fine if you’ve hired them specifically for content or press, but you should know what’s missing.

Red flags to walk away from

Some pitches should end the conversation immediately.

“Guaranteed ranking in ChatGPT.” Nobody can guarantee a position in a generative answer from a probabilistic system. Any agency that says this is either lying or doesn’t understand how these systems work.

“Proprietary algorithm” or “secret method.” The work is content, press, schema, and measurement. No agency has access to secret AI optimization levers. If the pitch is wrapped in mystery, that’s marketing smoke covering for thin execution.

“Fast results in 30 days.” The sources that feed AI products update slowly. Wikipedia updates take time. Press coverage takes time to propagate. Knowledge graphs update on their own schedule. A real program shows early signals in 90 days and meaningful movement in 6 to 12 months. Fast results are either false or short-lived.

Vanity metrics only. Agencies that report success in impressions, keyword rankings, or domain authority are measuring SEO, not AEO. Ask specifically how they measure AI visibility and framing, and what their baseline and progress look like.

No examples of real client work. A real agency has case studies, before-and-after prompt tracking reports, and references from clients you can contact. No portfolio means no track record, and no track record is a hard pass.

Unwilling to explain the methodology. Good agencies are transparent about their approach. They’ll walk you through their content framework, their press outreach process, and their measurement stack. Agencies that deflect specifics are hiding thin execution.

Questions to ask in the sales call

Use these in every sales conversation with a prospective agency. The answers will tell you quickly who’s serious.

“Walk me through a specific past client engagement from month 1 to month 12.” Real agencies can tell you exactly what they did in month 1, what in month 3, what changed by month 6, and what the client’s AI visibility looked like at the end of the year. Vague answers mean no real track record.

“What does your measurement stack look like, and can I see a sample report?” Real agencies use tools like Otterly, Profound, or custom prompt trackers. They have dashboards and monthly reports showing prompt-level visibility data. Ask to see a redacted sample.

“How do you handle press and citation work? Who does the outreach?” Real agencies either have in-house press people or partner with specific PR firms. Vague answers like “we help with press” usually mean there isn’t a real press practice.

“What prompts would you track for my business, and why those?” A good agency will do a quick discovery of your category and suggest specific commercial prompts your customers might actually use. A bad agency will give you a generic list.

“What’s your retention rate at the 6-month and 12-month marks?” Agencies that can’t give you real numbers here are probably losing clients quickly. Good shops have 6-month retention above 80 percent and 12-month retention above 60 percent.

“Who specifically will work on my account, and what’s their experience?” The senior people who pitch you aren’t always the people who execute. Ask for names, and ask about their specific AEO experience, not just general marketing.

“Can I talk to two current clients?” Any real agency should be willing to set this up. If they refuse, that’s a red flag.

What pricing should look like

AEO is not cheap because the work is labor-intensive. A rough guide:

$2,500 to $5,000 per month. Small retainers for small companies. Usually includes limited content, basic entity work, some measurement, and minimal press outreach. Appropriate for early-stage companies testing the waters.

$5,000 to $10,000 per month. Mid-size retainers. More content, real press outreach, full measurement, and strategic guidance. Appropriate for growing companies with real budgets.

$10,000 to $25,000 per month. Senior-level retainers. Full-stack AEO programs with substantial content production, meaningful press coverage, entity and technical work, and custom measurement dashboards. Appropriate for established companies with meaningful revenue.

$25,000 per month and above. Enterprise programs. Multi-brand, multi-market, or highly specialized categories. Only for organizations where AI visibility is directly tied to significant revenue.

Below $2,000 per month. Usually a warning sign. The unit economics don’t support real work at that price. What you get is typically a content package that’s indistinguishable from a cheap SEO retainer.

Be wary of agencies that charge significantly more than these ranges without explaining where the extra budget goes. Premium pricing should buy premium execution, not premium packaging.

The content-only trap

A common pattern in the AEO agency market: shops that only do content, pitched as a full AEO program. The content is fine, the schema is correct, the internal linking is sensible. But the press work is absent, the entity work is superficial, and the measurement is limited to “we updated your page.”

Content alone doesn’t move AI visibility for most businesses. The press and citation signals are what get you into training data and retrieval contexts. A content-only engagement is cheaper but it’s incomplete, and the results reflect the incompleteness.

If you hire a content-only shop, know that’s what you’re getting and plan to handle the press and entity work separately.

The press-only trap

The opposite problem: PR agencies that have rebranded as AEO specialists without actually building the other capabilities. They know how to get you coverage, but they don’t understand the content structure that makes AI products extract answers correctly, they don’t have schema experience, and their measurement is limited to counting press hits.

Press coverage is a huge input to AEO, but it’s not the whole program. If the site isn’t structured correctly, the press coverage flows into a system that can’t fully use it.

How to run a trial

The safest way to evaluate an agency is a short, focused trial.

A 90-day pilot with a fixed scope: 4 to 6 content pieces, schema implementation on key pages, 2 press outreach efforts, baseline prompt tracking, and a month-3 readout showing what moved.

At the end of the pilot, you should see: clear baseline data from month 1, documented work executed across all four AEO components, and directional movement in prompt visibility or entity signals even if the headline results aren’t dramatic yet.

If the pilot results are good and the working relationship is productive, renew into a full retainer. If the results are vague or the relationship is painful, walk away with limited loss.

The in-house alternative

For some companies, hiring in-house is a better option than an agency. The roles:

This is typically more expensive than an agency for small to mid-size companies because you’re paying full-time salaries. It becomes cost-competitive at the $15,000 to $25,000 per month retainer range, where you could hire a dedicated person and supplement with freelancers.

The tradeoff: in-house gives you more focus and strategic ownership, but agencies give you broader exposure to patterns and faster ramp-up.

The bottom line

Picking an AEO agency is mostly about avoiding bad ones. Walk away from guarantees, secret methods, and vanity metrics. Look for transparent methodology, real case studies, measurement-first approaches, and pricing that matches the depth of work.

The right agency feels like a serious marketing partner doing serious work. The wrong one feels like someone selling a trick. Trust that instinct when the sales call feels off, and save your budget for a shop that treats AEO as the craft it actually is.