Hire the agency that will name the metric it intends to move before you pay, show you work in progress rather than status updates, and hand you something you keep if you stop. For a small team, fit and implementation ability matter far more than agency size. Start from your bottleneck, not from a vendor list.
Case one: you run a Shopify store. Your problem is usually scale — hundreds or thousands of URLs with duplicated collection and variant pages, thin metadata, and wasted crawl budget. Hire someone who works inside themes and can operate across a catalog programmatically. An agency that proposes rewriting product descriptions by hand has not understood the size of the job.
Case two: you run a Webflow or Next.js marketing site. Your problem is usually structure, not volume — no structured data, ambiguous entity signals, and content written to rank rather than to be quoted. Hire for schema and entity work plus content restructuring, and confirm they will implement in your stack rather than filing tickets for your developer.
Case three: you do not know what is broken. Do not hire a retainer. Buy a diagnosis — a fixed-scope audit with a named baseline — and make the retainer decision afterwards with data. This is the single most common expensive mistake in this category: twelve months of activity bought to answer a question a two-week audit would have answered.
The red flags are consistent. Guaranteed citations in ChatGPT or guaranteed AI Overview placement: nobody controls either, and anyone claiming otherwise is either misinformed or lying. A monthly retainer with no named metric. "AI content at scale" as the entire strategy. No access to implementation, so every recommendation queues behind your own roadmap. And a proposal that never mentions what happens if the number does not move.
Five questions for the first call, and they are deliberately hard to bluff. Which metric will you move, and what is it today? What would you do in week one? Who does the implementation — you or my team? What do I own if I cancel after the first deliverable? Show me a project where the result was worse than you expected, and what you did about it.
Disclosure: OptimaFlow is one of the agencies you would be choosing between, so read this as a framework from an interested party. Our shape is fixed-scope AEO plus implementation for small teams — a free automated audit, or a $750 Visibility Fix Sprint over 5–7 business days with the fee credited if you continue, then a $2,500 foundation build or a $2,000+/month retainer if it makes sense. We are a poor fit for enterprise procurement and for paid-media-led growth, and saying so is cheaper for both of us than discovering it in week three.
On timing, be sceptical of anyone who gives you a confident date. Technical and structural fixes tend to show up in crawling and indexing behaviour first, then in citations, and how long that takes depends on how often your site is crawled, how competitive the query is, and how much of the fix was structural versus editorial. What a good agency can commit to is a baseline taken before the work and the same measurement repeated after — not a date on which an AI assistant will start quoting you.
Frequently asked
How much should AI SEO work cost?
Fixed-scope diagnostics typically run in the high hundreds to low thousands of dollars; structural implementation runs into the low thousands; ongoing retainers vary widely. What matters more than the number is whether the scope and the target metric are written down.
Can an agency guarantee that ChatGPT will cite my business?
No. No agency controls which sources an AI assistant selects. What can be committed to is the work that makes a site eligible and readable, plus a measured before-and-after.
Should I hire an agency or a freelancer?
A freelancer is often better for a single well-defined fix. An agency is better when the work spans strategy, content, and implementation at once, or when you need continuity beyond one person's availability.
What should I buy first if my budget is small?
A diagnosis. A fixed-scope audit with a named baseline metric costs a fraction of a retainer and tells you whether you need one at all — and the findings stay yours regardless of who does the work.
Free, concrete, yours to keep
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