The short answer.
Start with Omniscient Digital, iPullRank, Siege Media, First Page Sage and Omnius. Each is named in at least five of the eight ranking lists we read, has a dedicated page for AI search work, and publishes case studies or a method.
That is a shortlist, not a verdict. The five are strong at different things: B2B software, enterprise relevance work, content and digital PR, organic lead generation, and SaaS and fintech.
Buying in the UK? See our comparison of AI SEO agencies for UK buyers. Want a pure GEO and AEO specialist? See the GEO and AEO agencies we compared.
“AI SEO” means two things: SEO done with AI tools, and getting your company named in AI answers from ChatGPT, Google’s AI Overviews, Gemini and Perplexity. All five sell the second. Our guide to what AI SEO services actually include explains both.
How we chose the five.
On 13 November 2026 we read the “best AI SEO agencies” lists in Google’s US top ten for “best ai seo agency” and “ai seo agency”, and counted which agencies each named. An author’s mention of itself was never counted.
Source: eight ranking “best AI SEO agencies” lists, Google US desktop top ten for “best ai seo agency” and “ai seo agency”, read 13 November 2026. Two more agencies were named in four lists each; all others in two or fewer.
What the ranking lists do, and what they miss
We also looked at how each list is built. They are listed by author type, not named, because the point is the pattern.
| List | Written by | Agencies | Words | Visuals | Dated | Selection counted? |
|---|---|---|---|---|---|---|
| A | An agency (itself first) | 12 | 4,500+ | Screenshots, one chart | Sep 2026 | No |
| B | An agency (itself first) | 6 | 1,600 | Tables | Oct 2026 | Weighted score, not shown |
| C | An agency (itself first) | 10 | 2,500 | Tables | Nov 2026 | Criteria, no counts |
| D | An agency (itself first) | 12 | 2,400 | One table | Oct 2026 | Counted lists; ordered by price |
| E | A software company | 10 | 5,000+ | One table | Sep 2026 | Criteria, no counts |
| F | A software company | 7 | 2,400 | Table, homepage shots | Sep 2026 | Criteria, no counts |
| G | An agency (itself first) | 30 | 7,000 | Logos, one table | Oct 2026 | Counts, no criteria |
| H | An agency (itself first) | 5 | 1,600 | Illustrations | Mar 2026 | No |
Most give a “best for” line, and several give questions to ask. What they rarely do is count across lists without counting themselves, date every fact to the agency’s own page, or say how to judge the proof an agency shows. This guide does those three things.
The five AI SEO companies at a glance.
In order of how many lists name them, which is not a ranking of quality. Each card is drawn from the agency’s own website.
Omniscient Digital
Focus: B2B brands recommended in AI and search
Location: Austin, New York and three more US offices
Best for: B2B software tying AI visibility to pipeline
Proof: named case studies, AI and pipeline figures
iPullRank
Focus: enterprise AI search, “Relevance Engineering”
Location: not stated
Best for: enterprise and mid-market brands
Proof: sector case studies; a 24-chapter manual
Siege Media
Focus: “Full-service GEO”, content and digital PR
Location: Austin, New York City, Chicago, San Francisco
Best for: SaaS, fintech and consumer brands
Proof: named stories with LLM visibility figures
First Page Sage
Focus: “SEO + GEO” for organic lead generation
Location: not stated
Best for: teams judging search by qualified leads
Proof: sector case studies with lead figures
Omnius
Focus: “AI-native SEO & GEO”
Location: London, UK (HQ), and Dubai
Best for: SaaS, fintech and AI companies
Proof: named results on sign-ups and AI search
| Agency | Method it publishes | Timeline it states | Price it publishes |
|---|---|---|---|
| Omniscient Digital | Four-part method, seven steps | Not stated | From $120,000 a year |
| iPullRank | Assess, prioritise, activate; three tiers | Not stated | Not published |
| Siege Media | Foundation, activation, compound | Months 1–2, 2–4, 4+ | Not published |
| First Page Sage | Six elements of GEO | Not stated | Not published |
| Omnius | 20 listed GEO activities | 2–3 months first, 6–12 larger | Not published |
The figures in the profiles are each agency’s own published results. We have not audited them; ask any agency, including us, to show the underlying report.
Omniscient Digital.
Named in seven of eight lists, the most of any agency. It calls itself “an organic growth agency that gets B2B brands recommended across AI and search engines”.
Known for
Getting brands “discovered, accurately represented, cited, and recommended” in AI conversations, through a four-part method: model buyer demand, win the consideration set, shape the sources behind the answer, and measure against pipeline.
Best for
B2B software companies that want AI visibility tied to analytics, CRM data and pipeline. It publishes a starting price: “Full-service engagements start at $120,000/year.”
Proof it reports
Convert grew LLM visibility by 81% and AI citations by 140%.
Ask them
“Which prompt clusters would you track for us, and how would you connect them to our CRM?”
Source: the agency’s own website, read 13 November 2026.
iPullRank.
Named in six of eight lists. It describes itself as a “Pioneering Enterprise and Mid-Market AI Search Agency”, built on what it calls Relevance Engineering.
Known for
Depth of method. Its GEO service runs in three stages, assess, prioritise and activate, across Emerging, Growth and Elite tiers, and measures citation frequency and AI referral traffic against competitors. It publishes a 24-chapter AI Search Manual.
Best for
Enterprise and mid-market brands with large or complex sites. Its about page notes that many of its Fortune 100 clients sign non-disclosure agreements.
Proof it reports
“$5B+ in organic search results” for its clients, with results shown by sector rather than client name.
Ask them
“Which tier fits a business our size, and what does the baseline report show?”
Source: the agency’s own website, read 13 November 2026.
Siege Media.
Named in six of eight lists. Its headline is “Full-service GEO. We make brands the answer in search.”
Known for
Content and digital PR built to be cited: “LLMs reward sources, not opinions.” Work includes original research, comparison content, a disclosed Reddit presence and regular refreshes. Its chief executive has written a book on generative engine optimisation, published by Wiley.
Best for
SaaS, fintech and consumer brands that want a content programme with a strong PR arm, measured monthly in LLM share of voice.
Proof it reports
96% LLM visibility for Zapier, and Grow Therapy reaching “nearly 4x its LLM visibility in a crowded market.”
Ask them
“Which publications and communities shape answers in our category, and how would you earn a place in them?”
Source: the agency’s own website, read 13 November 2026.
First Page Sage.
Named in five of the seven lists it did not write. It calls itself “an SEO + GEO agency” building “full-funnel, organic lead generation systems”.
Known for
An early start: its GEO page says the service launched on 9 May 2023. The work has six elements, from placement in highly ranked list articles and databases to review management and social sentiment.
Best for
Businesses that judge search by qualified leads rather than rankings, and want SEO and GEO handled together.
Proof it reports
Qualified leads for an AI writing assistant grew “from 214 to 2,640”; Cadence Design Systems saw a 934% increase in total keyword rankings.
Ask them
“Which list articles and databases matter in our category, and how do you report the leads from them?”
Source: the agency’s own website, read 13 November 2026.
Omnius.
Named in five of eight lists. It calls itself an “AI-native SEO & GEO agency”, headquartered in London with an office in Dubai. It lists no US office, but its site describes work for US-based software and fintech clients.
Known for
A published technical checklist of 20 GEO activities, including AI crawler access, schema matched to visible content, original data and citations on Reddit, Quora, G2 and LinkedIn. It states first results in two to three months and larger ones in six to twelve.
Best for
SaaS, fintech and AI companies that want a specialist who knows their buyers.
Proof it reports
Fintech client ANNA Money “grew signups by 60% and AI search by 164.44%”.
Ask them
“Which of your 20 GEO activities would come first for us, and why?”
Source: the agency’s own website, read 13 November 2026.
How to choose an AI search optimisation agency, and judge its proof.
Choose on fit, then on evidence. Decide what you need changed, shortlist the two or three whose focus matches, and ask each for dated proof from a business like yours.
- 01 · OVER 500 STAFF?Yes: an enterprise AI search specialist
- 02 · SAAS OR FINTECH?Yes: a B2B software specialist
- 03 · NOBODY WRITES ABOUT YOU?Yes: a content and digital PR-led agency
- 04 · LEADS MATTER MOST?Yes: a lead-focused SEO and GEO agency
- 05 · TRACKING WEAK, OR ADS TOO?Yes: one team across search, ads and measurement
Work down the list and stop at the first yes. Chapter 11 has a fuller six-question version.
A buyer’s checklist
- A page explains its AI search method, not only its SEO.
- It names the AI engines it tracks and how often it samples each question.
- It reports mentions and citations separately.
- It explains how an AI-referred visitor shows up in your analytics and CRM.
- It says who does the work: writers, technical specialists, PR.
- Its first deliverable is a baseline, not a promise.
If search is only part of your pipeline, our comparison of B2B SEO agencies covers firms built around longer sales cycles.
How to judge the proof an agency shows
| Check | Stronger | Weaker |
|---|---|---|
| Date | Two dated periods compared | “Recently”, or no dates |
| Source | A named report: GA4, Search Console, CRM | A number with no source |
| Outcome | Enquiries, pipeline or revenue | Visibility scores alone |
| Who says so | A screenshot, or a verified review | The agency’s summary only |
For 20 questions with good and weak answers, see the questions to ask an SEO or AI search agency before you hire. For what the work looks like once it starts, read what a GEO or AEO agency does, week by week.
What a buyer might ask an AI engine
“Which agencies help a mid-sized US software company get recommended by ChatGPT?”
The answer will usually name a handful of agencies, and asking twice may change the list. Ask it about your own category and you see what your buyers see.
An invented question, for illustration only.
On price: of the five, only Omniscient Digital publishes one. Our guide to what AI search optimisation costs shows how to compare proposals line by line.
How Prolinkage works differently.
We wrote this guide, so here is how we work. We start with an audit of your website before you pay anything, run search, AI visibility, paid media and measurement as one team, and show our evidence dated and anonymised.
How an engagement runs
- STEP 1Audit, at no chargeYour buyers’ questions through the main AI engines, reviewed by a person
- STEP 2PlanPages, sources and fixes, in priority order
- STEP 3Build and runContent, technical SEO and campaigns
- STEP 4Measure to revenueGA4 and CRM, from AI referral to closed deal
The first step is an audit of your site, at no charge, because we would rather you trust our work before you pay for it.
One team across the funnel
The same team covers SEO, AI search visibility, Google Ads, LinkedIn Ads, conversion tracking and analytics, conversion rate optimisation and website development. Being named in an AI answer is only the first step; the enquiry and the deal have to follow, and someone has to see them.
- Our SEO service: technical SEO, content and credible authority built around what you sell.
- GA4 and CRM measurement: checks from the browser action to the record it creates.
- Google Ads management: intent and exclusions set around your sales priorities, with a form fill reported apart from a qualified opportunity.
We work mainly with B2B companies, and with many companies in the US and UK.
The proof wall
Five clients, names withheld. Each result is dated and sourced.
Client 1, a US B2B company. Closed-won HubSpot revenue credited to Organic Search and AI Referrals: $37,350 (Apr–Jun 2026) to $117,100 (Jul–Sep 2026). AI Referrals alone: $0 to $9,400.
Client 3, a Singapore parcel-shipping platform. Organic-search users a month rose from 330 in July 2020 to 5,868 in November 2021, up 1,678%.
Client 4, a fitness brand with English and Greek sites. New organic-search users on the English site rose from 265 to 527, 28 Oct–26 Nov 2024 against the previous 30 days.
Client 2, a US project-controls consultancy. Website traffic up 120% and top rankings for business keywords, client-reported in a 5.0 Clutch-verified review: 5.0 on quality, schedule, cost and willingness to refer. Project: pay-per-click, SEO and social media, Jan 2022–Mar 2024.
Client 5, a US analytics software company. 2.9K ranking keywords in Semrush’s US desktop database, January 2022 snapshot.
Each is one business over one period: a dated example of the work, not a forecast for yours. What the CRM result does and does not prove is set out in one client’s CRM evidence on AI visibility and revenue.
Which kind of agency fits you.
Answer six questions. The scorer suggests a kind of agency, not a named one, and what to ask. Nothing you choose is sent anywhere.
Suggested fit: a B2B software specialist
Change any answer to update the suggestion.
A sensible next step with any AI visibility agency.
Shortlist two or three agencies whose focus matches yours and send each the same brief. Compare the baseline each would build, the proof each can show, and who would do the work.
If you would like us in that comparison, we will audit how AI engines and search describe your business today, at no charge, and walk you through what we find. If it suits you, we can talk about getting your company named in AI answers and measured through to revenue; if not, you keep a clear baseline for every other conversation.
Questions buyers ask.
What is the best AI SEO agency in the US?
There is no single best one; it depends on your size, sector and goal. The AI SEO agencies named most often across eight ranking lists we read on 13 November 2026 were Omniscient Digital, iPullRank, Siege Media, First Page Sage and Omnius (Omnius is based in London). Shortlist the two or three whose focus matches yours.
What does an AI SEO agency do?
An AI SEO agency, sometimes called an LLM SEO or AI search optimisation agency, works to get your company named and cited in AI answers from ChatGPT, Google’s AI Overviews, Gemini and Perplexity: a baseline of buyer questions, content and technical fixes, mentions on trusted sources, and measurement.
How did you choose these AI SEO companies?
We read the eight “best AI SEO agencies” lists ranking in Google’s US top ten on 13 November 2026 and counted how many named each agency, leaving out each author’s mention of itself. We then checked that each had a dedicated AI search page and published case studies or a method.
Why is Prolinkage not in the list?
Because we wrote the guide, and ranking ourselves would make the list less useful. We describe how we work in a separate chapter so you can compare us on the same terms as the five.
How long does AI SEO take to show results?
Agencies set different expectations. Omnius, for example, states first results in two to three months and larger results in six to twelve. Ask every agency for its own timeline and for the baseline it will measure progress against.
Sources, all read 13 November 2026: eight ranking “best AI SEO agencies” lists in Google’s US desktop top ten for “best ai seo agency” and “ai seo agency” (not linked); each agency’s own website, including its AI search service page, case studies and about page; Prolinkage client evidence from HubSpot, Universal Analytics, GA4, Semrush and a Clutch-verified review, names withheld.