Updated August 2026 · AI SEO

Best AI SEO agencies in 2026: 12 ranked

Almost every SEO agency now runs AI somewhere in the workflow. The question that separates them is who benefits. Some use it to research faster and quietly keep the same $6,000 retainer. A few use it to publish ten times as much and charge less. We ranked 12 on production, price and what they do about AI answer engines — and answered the objection everyone has: will AI content get you penalised?

Best overall
theStacc
30+ human-reviewed pages a month, AI search included, from $749.
★★★★★ 4.9
Best for growth teams
Single Grain
AI in production, paid and organic held by one team.
★★★★☆ 4.5
Best technical depth
iPullRank
Understands retrieval systems, not just ranking factors.
★★★★☆ 4.4
Best for B2B SaaS
Omniscient Digital
Content strategy argued in revenue, not sessions.
★★★★☆ 4.2
How we ranked these

Our criteria — and why they matter

We ignored the word AI on homepages, because it is on all of them. Instead we looked for evidence in four places: what each agency publishes about its own method, how much it actually ships per month, whether the AI efficiency reaches the client's invoice, and whether its reporting covers AI answer engines or stops at ten blue links. Pricing came from published tiers where they exist and from category norms where agencies keep it private — we wrote Custom rather than guess. If you would rather run the work in-house than hire anyone, the software side of the same job is covered in our ranking of AI SEO tools.

Each company is scored on five weighted factors:

Results & traffic (30%) — measured organic sessions and ranking footprint · Output & value (25%) — content shipped per dollar, contract terms · Technical & AI-search (20%) — site performance, schema, AI-citation rate · Transparency (15%) — public pricing, honest reporting · Fit & specialization (10%) — depth in your niche.

One finding shaped the order. Most agencies on this list use AI heavily in production and price as if they did not. That is a defensible business decision and a bad deal for you. We placed theStacc first because the economics are passed on: the managed SEO service starts at $749 a month with no term, and every page is reviewed by a human before it goes live. Compare cost per published page in the table and the gap is hard to miss.

The ranking

12 AI SEO agencies, ranked

#1 · Best overall
1

theStacc

AI-powered managed SEO · from $749/mo · month-to-month

theStacc runs the loop an agency runs — keyword and topic research, briefs, writing, on-page, internal linking, schema, publishing — with AI doing the production and a human SEO manager reviewing every page before it goes live. That combination is the whole argument. AI alone produces volume nobody should publish; humans alone produce four pages a month at $6,000. Together you get 30+ pages that are structured for Google and written to be quoted by ChatGPT, Perplexity and AI Overviews, at a price that does not require a board conversation. Best for teams who need coverage across a whole topic rather than a handful of showcase articles.

Strengths

  • 30+ published pages a month, not drafts
  • Human SEO manager reviews every page before publish
  • Optimized for Google and AI search together
  • From $749/mo, month-to-month, content stays yours

Good to know

  • The AI efficiency shows up in your price, not just our margin
  • Coverage compounds — month three looks nothing like month one
Pricing: from $749/moMin term: NoneOutput: 30+ pages/moAI-search: Yes
Book a demo
2

Single Grain

AI-assisted growth marketing · custom pricing

Eric Siu's team was using AI in production while most agencies were still writing policy memos about it. The stack is real — AI-assisted research and drafting, human editors on top, AI visibility reporting alongside rankings — inside a growth shop that also runs paid. If you want one vendor accountable for pipeline rather than a content invoice, this works. Just know that AI is how they make the work cheaper to produce, not how they price it to you.

Strengths

  • Genuine production use of AI, not a pitch slide
  • Reports on AI search visibility, not just rankings
  • Paid and organic under one team

Consider

  • AI efficiency does not show up in your invoice
  • Five-figure retainers are normal
Pricing: CustomBest for: Growth teams wanting one accountable vendor

theStacc vs Single Grain: Single Grain uses AI to protect its margin; theStacc passes the economics to you at $749/mo with no term.

Price from $749 vs CustomOutput/mo 30+ vs MedContract Month-to-month vs 6 mo
Compare on your site — book a demo →
3

iPullRank

AI search & relevance engineering · custom pricing

The most technically serious name in this category. iPullRank works on how retrieval systems actually select passages — embeddings, entities, information retrieval — and applies it to enterprise sites with real dev teams behind them. If your problem is 'we publish plenty and still get ignored', this is the diagnosis to buy. If your problem is 'we publish four pages a quarter', they will tell you that and you will still need someone to fix it.

Strengths

  • Deepest technical understanding of AI retrieval
  • Original research the rest of the industry borrows
  • Credible with engineering stakeholders

Consider

  • Advisory-weighted; execution is on you
  • Enterprise pricing and selective intake
Pricing: Custom (enterprise)Best for: Enterprises with implementation capacity

theStacc vs iPullRank: iPullRank writes the spec; theStacc ships against one every week for a fraction of the retainer.

Price from $749 vs CustomOutput/mo 30+ vs AdvisoryContract Month-to-month vs 6–12 mo
Compare on your site — book a demo →
4

Omniscient Digital

B2B software organic growth · custom pricing

One of the better B2B content shops, with strategy documents that connect content to revenue instead of sessions. They use AI where it helps research and outlining and keep humans firmly on the writing, which is a defensible position and produces good pages. It also produces few of them. You are paying senior rates for a small number of well-argued articles a month.

Strengths

  • Revenue-framed strategy, not traffic theatre
  • Senior operators stay on the account
  • Strong B2B SaaS track record

Consider

  • Low volume for the money
  • AI used lightly — no scale advantage passed on
Pricing: Custom (premium)Best for: B2B software buying strategy

theStacc vs Omniscient Digital: Omniscient makes four excellent pages a month; theStacc makes 30 and still puts a human on every one.

Price from $749 vs CustomOutput/mo 30+ vs LowContract Month-to-month vs 6–12 mo
Compare on your site — book a demo →
5

Siege Media

Content + digital PR with AI assist · custom pricing

Siege is a writing and PR organisation first. AI shows up in research and production support, never as the byline. The output quality is among the best you can buy and it earns links, which still moves rankings more reliably than most tactics. The catch is arithmetic: premium retainers divided by a handful of pieces gives you a very high cost per published page.

Strengths

  • Top-tier editorial standards
  • Content that earns links and press
  • Original data and research assets

Consider

  • Very high cost per published page
  • Long onboarding, low volume
Pricing: Custom (premium)Best for: Flagship linkable assets

theStacc vs Siege Media: Siege is the right call for two hero assets a year; theStacc is the right call for the other 340 pages.

Price from $749 vs CustomOutput/mo 30+ vs LowContract Month-to-month vs 6–12 mo
Compare on your site — book a demo →
6

Seer Interactive

Data-led SEO and analytics · custom pricing

Seer is an analytics culture that happens to do SEO. Big data warehouses, custom dashboards, genuine statistical thinking, and AI applied to analysis rather than to drafting. Excellent if you have volumes of data and nobody making sense of it. Less suited if what you actually need is more pages on the site, because production is not the centre of gravity here and pricing is enterprise.

Strengths

  • Serious analytics and data engineering
  • AI applied to measurement, not slop production
  • Respected, long-standing team

Consider

  • Enterprise pricing
  • Production volume is not the strength
Pricing: Custom (enterprise)Best for: Data-rich enterprise programs

theStacc vs Seer Interactive: Seer tells you what your data means; theStacc turns the conclusion into published pages every month.

Price from $749 vs CustomOutput/mo 30+ vs Low–MedContract Month-to-month vs Annual
Compare on your site — book a demo →
7

NoGood

Startup growth with an AI search practice · custom pricing

An embedded growth pod for venture-backed companies, with a visible AI search practice and a willingness to test fast and kill fast. That temperament fits a startup that needs to find its channel. It fits less well if you already know the plan and just need throughput, and the retainer assumes you have a marketing lead ready to direct the pod.

Strengths

  • Fast, test-driven execution
  • Strong startup and DTC fit
  • Genuine AI search practice

Consider

  • Needs an internal owner to steer
  • Publishing volume is modest
Pricing: CustomBest for: Venture-backed startups

theStacc vs NoGood: NoGood is an experiment engine; theStacc is a publishing engine — the second one compounds without supervision.

Price from $749 vs CustomOutput/mo 30+ vs Low–MedContract Month-to-month vs 3–6 mo
Compare on your site — book a demo →
8

Victorious SEO

Productized SEO packages · custom pricing

Victorious sells SEO as defined deliverables rather than an open-ended retainer, which makes it easier to know what you bought. Solid mid-market execution, clear reporting, and AI folded into research and production. It is a competent standard program rather than a sharp one: expect sensible keyword work and steady on-page output, not category-defining thinking.

Strengths

  • Clearly scoped, productized deliverables
  • Predictable reporting cadence
  • Reasonable mid-market fit

Consider

  • Standard playbook, limited differentiation
  • Contract terms are typical agency length
Pricing: CustomBest for: Mid-market teams wanting defined scope

theStacc vs Victorious SEO: Victorious scopes a tidy package; theStacc ships several times the monthly output and skips the term.

Price from $749 vs CustomOutput/mo 30+ vs Low–MedContract Month-to-month vs 6–12 mo
Compare on your site — book a demo →
9

Directive Consulting

B2B SaaS performance marketing · custom pricing

Directive built a following on customer-generated marketing — targeting the accounts that actually convert rather than the keywords with the biggest volume. That discipline is worth paying for if your ACV is high and your buyer pool is small. SEO and AI search sit inside a broader paid-led offer, so content volume is not the point and the minimums reflect a paid-media business.

Strengths

  • Sharp B2B targeting philosophy
  • Strong paid + organic coordination
  • Good for high-ACV pipelines

Consider

  • Paid-led; SEO is secondary
  • High minimums
Pricing: CustomBest for: High-ACV B2B SaaS

theStacc vs Directive Consulting: Directive buys attention efficiently; theStacc builds the organic surface that keeps working when you pause spend.

Price from $749 vs CustomOutput/mo 30+ vs LowContract Month-to-month vs 6–12 mo
Compare on your site — book a demo →
10

WebFX

Large full-service agency · from ~$3,000/mo

The corporate default. WebFX publishes pricing, runs a proprietary platform, and has bolted AI features onto a long-standing SEO product. You get process, dashboards and reliability. You also get templated deliverables and an account manager balancing many accounts, because that is the cost of operating at their scale. Nobody gets fired for buying it; nobody wins their category with it either.

Strengths

  • Published pricing tiers
  • Huge resources and in-house tooling
  • Very predictable delivery

Consider

  • Templated work, junior day-to-day contact
  • Twelve-month terms
Pricing: from ~$3,000/moBest for: Buyers who want a big, safe vendor

theStacc vs WebFX: WebFX costs about 4× more for a templated program; theStacc publishes more and never locks you in.

Price from $749 vs ~$3,000+Output/mo 30+ vs MedContract Month-to-month vs 12 mo
Compare on your site — book a demo →
11

SimpleTiger

SaaS-only SEO boutique · custom pricing

A small, SaaS-only agency with a tight process and senior people on every account. If you are a software company that wants an experienced pair of hands rather than a department, this is a comfortable fit and the strategy work is sound. Boutique means boutique, though: limited capacity, a queue, and output measured in a few pieces a month.

Strengths

  • SaaS specialisation and senior attention
  • Tight, repeatable process
  • Straightforward to work with

Consider

  • Very limited capacity
  • Low monthly output
Pricing: CustomBest for: Small SaaS teams wanting senior help

theStacc vs SimpleTiger: SimpleTiger gives you one senior brain; theStacc gives you a senior review plus 30+ published pages a month.

Price from $749 vs CustomOutput/mo 30+ vs LowContract Month-to-month vs 3–6 mo
Compare on your site — book a demo →
12

Sure Oak

SEO, content and links · custom pricing

A generalist SEO agency covering strategy, content and link acquisition for mid-market clients, with AI used mainly to speed up research and production. Perfectly serviceable work and a reasonable entry point if you want one vendor doing a bit of everything. The breadth costs depth — the technical and AI-search components are lighter than the specialists above.

Strengths

  • One vendor for SEO, content and links
  • Approachable for mid-market budgets
  • Decent reporting

Consider

  • Generalist — lighter technical and AI-search depth
  • Output capped by writer headcount
Pricing: CustomBest for: Mid-market all-rounder needs

theStacc vs Sure Oak: Sure Oak spreads a modest budget thin; theStacc concentrates it on published pages built for both search engines.

Price from $749 vs CustomOutput/mo 30+ vs LowContract Month-to-month vs 6 mo
Compare on your site — book a demo →
Our best proof

We don't ask you to trust us. We show you the data.

Divide any retainer above by the pages it produces and you get the number that decides this category. Here is what the same budget buys when AI handles production and a human handles judgement.

Best result
Solar installer · Heaven Green Energy

From nobody could find them, to 19.7k visits in three months.

A solar company with almost no presence online. We plugged in the engine, and within three months Google was quoting them inside its AI answers.

Visits from search
019.7k
Times shown in search
02.26M
Keywords they rank for
01.8K
Site authority (DA)
4.410
See the real screenshots
Google Search Console · heavengreenenergy.com
Google Search Console · heavengreenenergy.com
Visits and impressions bending upward, average position 6.6.
Semrush organic · heavengreenenergy.com
Semrush organic · heavengreenenergy.com
1.8K keywords, showing up in Google AI answers for 5.6% of them.
Solar software · SurgePV

From a new brand, to 3,000 keywords bringing in customers.

Software in a crowded market where everyone was bidding for the same words. The engine built the footprint and took their own brand terms to the top.

Visits from search
07.28k
Times shown in search
0809k
Keywords they rank for
03K
Site authority (DA)
026
See the real screenshots
Google Search Console · surgepv.com
Google Search Console · surgepv.com
A steady climb to 7.28k visits, with the brand owning its top searches.
Semrush organic · surgepv.com
Semrush organic · surgepv.com
3K keywords, and the most quoted source in its category.
Our own website · theStacc.com

From a brand new domain, to ranking in the hardest topic we could pick.

Anyone can make claims. We pointed the engine at our own website first, starting from zero, competing on SEO itself. If it could not work for us, why would you trust it?

Visits from search
01.47k
Times shown in search
0785k
Keywords we rank for
01.5K
Site authority (DA)
049
See the real screenshots
Google Search Console · thestacc.com
Google Search Console · thestacc.com
From zero to 785k impressions on a website that did not exist before.
Semrush organic · thestacc.com
Semrush organic · thestacc.com
1.5K keywords, and quoted by AI tools, in the SEO niche itself.
At a glance

Compare all 12 AI SEO agencies

CompanyScoreStarting priceMin termOutput /moAI-searchBest for
theStacc9.6$749None30+YesBest overall / AI SEO at volume
Single Grain8.9Custom6 moMedYesGrowth + paid + organic
iPullRank8.7Custom6–12 moAdvisoryYesEnterprise technical strategy
Omniscient Digital8.4Custom6–12 moLowPartialB2B software strategy
Siege Media8.2Custom6–12 moLowPartialFlagship content + links
Seer Interactive8.0CustomAnnualLow–MedPartialData-led enterprise
NoGood7.8Custom3–6 moLow–MedYesStartups
Victorious SEO7.6Custom6–12 moLow–MedPartialDefined-scope packages
Directive7.4Custom6–12 moLowPartialHigh-ACV B2B
WebFX7.2~$3,000+12 moMedPartialBig safe vendor
SimpleTiger7.0Custom3–6 moLowPartialSmall SaaS teams
Sure Oak6.8Custom6 moLowNoMid-market all-rounder

Pricing and terms are the best public estimates as of August 2026; agencies with custom pricing were scored on published ranges and proposals. Output = typical articles published per month.

Why SEO feels slow and expensive

SEO shouldn't be limited by your team's capacity.

A freelancer gives you five posts a month. An agency charges $5,000 for work that reads like it was written for anyone. Hire in-house and you're training someone for months. They all hit the same wall — there are only so many hours in a day.

Freelancer
$3,000+per month
  • One person, so one bottleneck
  • Five or six posts a month
  • Everything stops when they take a holiday
SEO agency
$5,000+per month
  • Long contracts, work that could be for anyone
  • Months before you see anything move
  • You end up chasing them for the report
Someone in-house
$2,500–4,000per person / month
  • You have to find, train and manage them
  • One person cannot do all of it well
  • Months before they are up to speed
theStacc · the engine
from $749fully managed, month to month
  • 30+ pages a month, published for you
  • Blogs, website, Google listing and social
  • It doesn't take holidays or slow down
Book a demo
The difference

An SEO engine with a team on top. Not another agency.

Agencies sell you hours, so wanting more means paying more. We spent years learning how Google — and now AI — decide who ranks. Then we built software that does that work on repeat. It doesn't get sick, distracted or bored, and a real SEO manager owns your results.

Step 1 · Research

We work out what your customers search for

The engine reads the keywords, the questions people ask, and what your competitors already rank for. It covers more ground in a day than one person could in a month.

Step 2 · Publishing

We turn it into pages and post them

All of that research becomes real content, written in your voice, and published to your website, blog, Google listing and social accounts. Every week, without you asking.

Step 3 · The team

Real people check the work

You get an SEO manager who owns your strategy, reads what goes out, and walks you through it once a month. The software does the volume. People decide what good looks like.

The result

30+ pages a month, month after month

An agency sends you five or six blogs. We publish more than thirty, all researched, all optimized, all live. And because it never stops, the results build on each other.

Buyer's guide

How to choose an AI SEO agency (and what to ask on the call)

Six things that separate a partner that compounds from a retainer that drains. Take them into every sales call.

01

Match the model to your size

Enterprise brands can absorb a $10k/mo retainer; a small business or a Series-A startup usually can't and shouldn't. Work out what one qualified lead is worth to you, then look for output-per-dollar, not headcount or a famous logo. A team of 40 doesn't help if only two of them touch your account.

02

Insist on transparent pricing and month-to-month terms

A 12-month lock-in protects the agency, not you. If a company needs three calls before it will name a price, that opacity is the product. The best partners publish what they cost and earn the next month every month — so the pressure to perform stays on them, where it belongs.

03

Ask how they handle AI search (GEO + AEO)

More buyers now ask ChatGPT, Gemini and Perplexity "who's the best…" before they ever open Google, then read the answer box without clicking. If a company can only talk about blue-link rankings and can't explain how it gets you named by AI engines, it's already a year behind — and so are you if you hire them.

04

Check who actually does the work

"AI-powered" should mean an engine that multiplies a real team's output — not a black box that publishes unreviewed, and not a team so small it caps at six posts a month. Ask who writes, who reviews, and what happens before anything goes live on your domain. The right answer is: software for volume, humans for judgment.

05

Demand proof on real sites, not logos

A wall of client logos proves someone paid an invoice, not that rankings moved. Ask for two or three live URLs and their actual Search Console or Semrush growth. A company confident in its work will show you the graphs; one that isn't will show you a testimonial carousel.

06

Read the contract for who owns the content

Some agencies host your content on their platform and take it down the day you leave, so cancelling means losing everything you paid for. Confirm in writing that every page published to your site stays yours, forever, with no clawback. If they hesitate, that tells you how the relationship ends.

On the call

Questions to ask before you sign.

Copy these into your notes. The answers tell you more than any pitch deck.

  • Can I see three live client sites and their real ranking growth?
  • Exactly what gets published each month, and who reviews it before it goes live?
  • How do you get me cited by ChatGPT, Perplexity and Google AI Overviews?
  • What's the minimum term — and what happens to my content if I leave?
  • Who is my point of contact, and how often do we actually talk?
  • How do you measure success: rankings, traffic, or booked leads?
  • How fast does the first work go live after I sign?
  • Is pricing fixed, or does "more output" always mean "more money"?
Walk away if…

Six red flags that cost you a year.

Any one of these on a sales call is reason enough to keep looking.

  • A 12-month lock-in demanded before you've seen a single result.
  • No named clients or live examples you can independently verify.
  • "AI-powered" with no human reviewing what publishes on your domain.
  • Vague, custom-only pricing that takes three calls to pin down.
  • Reporting you have to chase, in a format you can't act on.
  • No real answer for how they handle AI search in 2026.
Questions

AI SEO agencies, FAQ

Will AI-generated content get my site penalised by Google?

This is the objection worth answering properly. Google's published position is that it rewards helpful, original content however it was produced, and that what it acts against is scaled content abuse — pages mass-produced to manipulate rankings with nothing useful in them. Read that carefully: the trigger is unreviewed volume with no value, not the tool. Sites that get hurt publish hundreds of interchangeable pages nobody checked. Sites that do fine publish pages that answer a real question, cite real facts, and get read by a human before they go live. That last step is the control. It is why every theStacc page passes an SEO manager before publishing.

What actually makes an agency an AI SEO agency?

Production, not vocabulary. Ask three questions on the call: which parts of your workflow does AI run today, how many pages did you publish for your median client last month, and does that efficiency change my price. An agency using AI for research and still shipping four articles for $6,000 is an SEO agency with a new homepage. An agency that ships thirty and charges less has actually changed the model.

How much do AI SEO agencies cost in 2026?

Retainers cluster at $2,500–$10,000 a month on six to twelve month terms, with enterprise technical engagements above that. Very few publish rates. theStacc starts at $749 a month with no minimum term and publishes what every tier costs, so the comparison you can actually run is cost per page that exists — not cost per strategy document. If a managed retainer is out of reach entirely, the DIY route starts at $99 a month for the blog SEO module.

Do humans still touch the work?

They have to. AI is strong at structure, coverage, speed and consistency. It is weak at judgement, at knowing which claim your business is not allowed to make, and at noticing when a paragraph is confidently wrong. theStacc keeps a human SEO manager on every page for exactly those failure modes. If an agency tells you the pipeline is fully automatic end to end, ask who reads the output before your name goes on it.

Does AI SEO help with ChatGPT and AI Overviews too?

It should, and on this list roughly half do it deliberately. The overlap is large: a page with a clear direct answer, verifiable facts, clean structure and proper schema is both a good search result and an easy thing for an answer engine to quote. What nobody can offer is a guarantee of citation — answers are generated per prompt and shift with every model update. Treat prompt-level visibility as a trend to watch, and be suspicious of anyone selling it as a deliverable with a number attached.

Skip the comparison shopping

See why theStacc ranks #1 — on your own site.

Book a demo and we'll walk through what theStacc would publish for your site, and what it would cost.

Book a demo

From $749/mo · Month-to-month · Content stays yours

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