ExplainerGenerative engine optimization
How to Choose a Generative Engine Optimization Agency
by the AEO GEO Labs team6 min read
To choose a generative engine optimization agency, judge it on four things: how it measures AI visibility, whether its advice matches official search engine guidance, how much of the work goes beyond content production, and how honest it is about what nobody can control. The right GEO agency shows you a named prompt set, a baseline, and a plan before asking for a long contract.
tl;dr
- 1Ask for the measurement method first. Everything else depends on it.
- 2Check advice against Google's own GEO guidance; good agencies cite it.
- 3Prefer agencies that do technical, entity and off-site work, not just content.
- 4Leave any call that promises guaranteed AI rankings.
This is a product-neutral buyer's guide. For background on the discipline itself, see our complete guide to generative engine optimization.
What a GEO agency should actually do
A GEO agency should improve how often AI engines mention, cite and accurately describe your company, and prove it with tracking. In practice that means five workstreams: prompt tracking, AI crawler access and indexation, content rewritten for extractable answers, entity consistency and structured data, and earning mentions in third-party sources. The detail of each is in what generative engine optimization services include.
As of October 2026, there is no certification or official partner program for GEO. Every agency is self-described, so your own due diligence is the only filter.
The GEO agency buyer checklist
Use these ten questions on every call.
- Which prompts will you track, on which engines, and how often? A good answer names a prompt set built from real buyer questions, specific engines such as ChatGPT, Google AI Overviews, Perplexity, Gemini and Microsoft Copilot, and a frequency.
- How do you handle answer variability? AI engines return different answers to the same prompt. Good agencies run prompts multiple times and report rates, not single screenshots.
- Which competitors will you benchmark against? Share of voice is meaningless without a defined competitor set.
- What will you change in the first 30 days, and why? Expect technical access and your highest-value pages first.
- What do you do beyond content? If the answer is only "we write AI-optimized articles", the agency is a content shop with a new label.
- How do you earn third-party mentions? Listen for digital PR, review programs and partner content. Be wary of "placements" that sound bought.
- Which tools do you use, and do we get the raw data? You should be able to keep your tracking history if you leave.
- Do your recommendations align with official guidance? Ask them to cite Google's or OpenAI's documentation for a claim they make.
- What does reporting look like? Ask for a sample report with metrics, not just a slide deck.
- What result would make you tell us to stop? An honest agency has an answer.
Google's own advice on hiring an SEO now covers this directly. As of October 2026, it suggests asking whether an agency's "AEO" or "GEO" advice is aligned with Google's official guidance on generative AI features, and whether they cite official documentation for their recommendations.
Red flags when hiring a GEO agency
The clearest red flags are guarantees, secret methods and scale tactics. Any of these is reason enough to keep looking.
| Red flag | Why it matters |
|---|---|
| "Guaranteed ChatGPT rankings" or "page one in AI Overviews" | No agency controls how AI engines choose sources |
| A proprietary "AI ranking algorithm" or "insider access" | Google's guidance on third-party SEO tools states third-party tools have no access to its internal ranking data |
| Hundreds of AI-written pages per month as the core offer | Google warns that mass pages built to manipulate AI responses breach its scaled content abuse policy |
| Paid placements presented as "earned mentions" | Inauthentic mentions are flagged as unhelpful in Google's AI optimization guide and can breach platform rules |
| llms.txt sold as the main lever | As of October 2026, Google says Google Search ignores llms.txt and no engine has shown it drives citations |
| No baseline before the contract | Without one, nobody can show the work moved anything |
Green flags to look for
The best signals are specificity and honesty. Look for agencies that:
- Show a sample prompt-tracking report with mention rate, citation rate and share of voice.
- Separate what is confirmed by engine documentation from what is their opinion.
- Date their claims about engine behavior, because engines change monthly.
- Offer a short diagnostic or audit before a retainer.
- Talk about your buyers and competitors before talking about their process.
Our view: a smaller, newer agency with transparent methods can be a better bet than a large one with case studies you can't verify. GEO is young enough that nobody has a decade of results. Judge the method.
How to compare GEO agency proposals
Compare proposals on scope and measurement, not on price alone. Put them side by side in a simple table.
| Criterion | Agency A | Agency B | Agency C |
|---|---|---|---|
| Prompts tracked and engines covered | |||
| Tracking frequency and variability handling | |||
| Technical work included | |||
| Content volume and type | |||
| Off-site and PR work | |||
| Data ownership and tool access | |||
| Contract length and exit terms | |||
| Reporting cadence |
Two proposals at the same price can be very different offers: 30 prompts on two engines is not 150 on five.
GEO agency vs AI SEO agency
A GEO agency and an AI SEO agency often sell the same thing under different names. Some "AI SEO" agencies mean using AI to produce SEO content, which is a different service. Ask which one you are getting. Our guide on what an AI SEO agency actually does covers that distinction.
Should you hire an agency at all?
You may not need an agency. If you already have an SEO lead and a content team with spare time, you can run a GEO program in-house: fix crawler access, rewrite key pages, and track a prompt set monthly. Our free AI visibility grader is a quick way to see whether your pages are ready before you talk to anyone.
An agency earns its fee when your team lacks time or when off-site mention work is the main gap.
Frequently asked questions
What does a generative engine optimization agency do?
A generative engine optimization agency works to get your company mentioned and cited in AI answers from engines like ChatGPT, Google AI Overviews, Perplexity, Gemini and Microsoft Copilot. Typical work covers prompt tracking, technical access for AI crawlers, content rewritten for direct answers, entity and structured data cleanup, and earning third-party mentions, all reported against a baseline.
How do I know if a GEO agency is legitimate?
A legitimate GEO agency explains its measurement method in detail, shows a sample report, cites official engine documentation for its claims, and is clear about what it cannot control. It will not guarantee rankings or citations. Ask for references and check whether its own content follows the practices it sells, such as direct answers and sourced claims.
Is a GEO agency different from an SEO agency?
Often the same firm offers both. The overlap is large, because AI engines retrieve from search indexes and need crawlable, trusted pages. A GEO-focused agency adds prompt tracking across AI engines, AI crawler access checks, passage-level content work and more off-site mention building. A traditional SEO agency without those additions is not doing GEO, whatever the service page says.
How long should a GEO agency contract be?
Start short. A fixed-fee audit or a three-month initial term lets you judge the method before committing. GEO results from content and mentions typically take a few months to show consistently, so very short trials can mislead in the other direction. Prefer month-to-month terms after the first period and make sure you keep your tracking data on exit.
What should a GEO agency report every month?
A monthly GEO report should show mention rate and citation rate across your prompt set, share of voice against named competitors, how engines describe your brand, and AI referral sessions from your analytics. As of October 2026 it can also include Google Search Console's Generative AI performance data and Bing Webmaster Tools' AI Performance citations. It should list the work shipped that month.
AEO GEO Labs is one option if you want a GEO, AEO and SEO partner for a B2B or SaaS team; we start with a free AI visibility report so you can judge the method first. See our GEO and AEO services.