Search for “best GEO agency” and you’ll find dozens of confident claims and very little proof. That’s understandable. Generative Engine Optimization is new, the rules are still settling, and almost every SEO shop has added “GEO” to its homepage this year.
So instead of handing you a list of names to trust blindly, this guide shows you how to judge any agency, including us, on evidence. It sits inside the wider world of AI SEO, so the questions below apply whether you’re a startup or an established brand.
What does a GEO agency actually do?
A real GEO agency works on how AI models understand and describe your brand. That usually covers four areas:
- Entity building: making sure your brand, services and expertise are defined consistently across the web.
- Citation and mention strategy: earning credible third-party coverage that AI systems draw on.
- Content restructuring (AEO): shaping pages so they answer real questions clearly and can be quoted.
- Measurement: testing prompts across ChatGPT, Gemini and Perplexity to see where you appear.
If an agency only talks about keywords and backlinks, it’s doing traditional SEO under a new label.
Why is it so hard to find the “best” GEO agency?
Because no neutral scoreboard exists. AI answers change by prompt, platform and week, so any “Top 10 agencies” list is usually opinion, and often written by an agency ranking itself first.
The better question is: which agency is best for your industry, budget and goals? That’s something you can test.
What proof should a good GEO agency show you?
Ask for evidence you can verify:
- Real prompt tests. Screenshots or live demos of AI answers naming their clients, with the date and the exact prompt used.
- Before-and-after tracking. A baseline measured before the work started, not just a good-looking result afterward.
- A clear method. Can they explain what they actually do, in plain language, without hiding behind buzzwords?
- Industry fit. Experience in markets similar to yours, including competitive or regulated ones.
- Honest limits. Good agencies say what can’t be controlled.
If an agency can’t show how it measured success, you can’t know whether you’re paying for results or for storytelling.
What are the red flags to avoid?
Walk away if you hear any of these:
- Guaranteed AI rankings. Nobody controls what a language model says. Guarantees are a warning sign.
- Fake reviews or mass-produced mentions. These are exactly what quality filters are built to discount.
- No reporting. If results can’t be tracked, they can’t be trusted.
- Vague deliverables. “AI optimization” isn’t a deliverable. A named list of tasks is.
- A one-size-fits-all package. A SaaS company and a local clinic need very different GEO work.
What questions should I ask before hiring?
Keep this short list handy on your first call:
- How do you measure AI visibility, and how often?
- Which platforms do you test: ChatGPT, Gemini, Perplexity, Google AI Overviews?
- What will you do in the first 30 days?
- Which off-site sources will you pursue, and how do you keep them authentic?
- What happens if results stall?
The way they answer tells you more than any case study slide.
How does Sarkar SEO approach GEO?
At Sarkar SEO, we start with a baseline: a structured set of customer-style prompts run across the major AI platforms before any work begins. That gives us, and the client, an honest picture of where the brand stands today.
From there, we focus on three things: clarifying the brand’s entity footprint, building credible third-party mentions in the places AI models learn from, and rewriting key pages in a question-and-answer format. We re-test monthly and share what moved and what didn’t. We don’t promise placement in any AI answer, because no honest agency can.
How much does GEO cost?
It varies widely with industry competitiveness, the number of platforms you want to appear on, and how much content and outreach is involved. Be cautious of both extremes: very cheap offers often rely on low-quality tactics, while very expensive ones don’t automatically mean better outcomes. Ask for a scope tied to specific deliverables, and compare agencies on what they’ll do rather than only on price.
How long before I see results?
Narrow, specific prompts can respond within weeks. Broad category recommendations take longer, since they depend on accumulated authority and consistent mentions. Treat GEO as a monthly program with regular testing, not a one-time project.
The bottom line
The best GEO agency isn’t the one with the loudest claims. It’s the one that can show its method, measure its results, and be candid about uncertainty. Use the checklist above on every shortlist, ours included.
If you’d like to see how Sarkar SEO would test and improve your brand’s AI visibility, get in touch for a baseline review and a clear plan.
