"AI marketing agency" might be the least standardized term in business right now. Behind the same three words you'll find a teenager reselling chatbot subscriptions, a dev shop building custom models nobody asked for, and — occasionally — a team that actually makes small businesses money with AI.
We run one of these (the third kind, we'd argue), so here's the honest taxonomy — what each type delivers, what each should cost, and how to tell them apart on the first call.
The three kinds of "AI agency"
1. The tool reseller. Buys white-label rights to a chatbot or an "AI receptionist," marks it up, and hands you a login. Deliverable: software. Support: a help doc. Cost: $100–$400/month. There's nothing evil here — sometimes a single tool is all you need — but you're paying an agency margin for something you could subscribe to directly, and nobody is accountable for whether it makes you money.
2. The custom-build shop. Developers who build bespoke AI: a fine-tuned model on your data, a custom pipeline, an integration nobody sells off the shelf. Deliverable: a project. Cost: $10,000 and way up. Right answer for maybe one small business in a hundred — usually one with unusual data or volume. If a shop is quoting you custom development for "answer my phone and request reviews," you're being oversold.
3. The implementation practice. Deliverable: outcomes, not logins. The agency picks the right tools, configures them around your workflow, connects them to each other, and stays accountable month over month. Cost: $200–$700/month for the systems, $1,000–$3,000/month if humans operate everything for you. This is the only category where "agency" means what it should.
The tell between #1 and #3 is one question: "what happens after it's installed?" A reseller's answer ends at setup. An implementer's answer is a monthly loop — scripts tuned, reviews replied to, missed calls audited, numbers reported.
What implementation actually covers
For a small business, the AI that reliably pays lives in five places:
- Reputation — review requests fired after every job, every Google review answered, your profile compounding while you work.
- Chat — website, Instagram, and Messenger answered in seconds, around the clock.
- Voice — a natural-sounding agent that picks up when you can't, qualifies the caller, and books the job. (Missed calls are the expensive leak.)
- Follow-up — the "still want that estimate?" sequences that revive quotes silence would have killed.
- Operation — a human team running all of it, plus the marketing around it.
That's the whole honest menu. Anything else an "AI agency" pitches a small business is usually one of these five wearing a costume. (Full breakdown with prices: AI implementation in plain English.)
The question almost nobody asks
Before any of it: where will the leads come from?
AI works the demand you already have. It answers calls, replies to chats, requests reviews — all verbs that need a customer on the other end. If your website doesn't rank and the phone is quiet, an AI receptionist is a subscription with nothing to do.
This is the diagnostic that should start every AI conversation, and it's the reason our practice leads with search instead of software: do you have an AI problem or an SEO problem? Get the order right and the two compound — search fills the funnel, AI works it, the reviews AI collects push the rankings higher.
How to vet one in ten minutes
- "What happens after installation?" — Monthly loop, or goodbye?
- "Show me a configuration you built for a business like mine." — Real implementers have real examples: the qualifying questions their voice agent asks, the review-reply tone, the follow-up cadence.
- "What do you not recommend for a business my size?" — The honest answer disqualifies custom builds and half the tool catalog. A shop that recommends everything is a reseller with a quota.
- "Where do the leads come from first?" — If they don't ask about your search presence before selling you AI, they're selling the second act without the first.
- "What are the terms?" — Month-to-month or walk. AI tooling changes too fast to be locked into anyone for a year.
The bottom line
An AI marketing agency worth hiring sells you a working loop, not a login: demand from search, every lead answered in seconds, every job turned into a review, every review feeding the rankings. Implemented for you, verified in your numbers, on terms you can leave.
That's the standard — and here's how we run it.