AI SEO Agency Rankings: 7 Compared for 2026 (with Prices)
AI SEO agency rankings for 2026. 7 agencies compared on pricing, platform coverage, and published client results. Independent ratings.
This page rates AI SEO agencies on one thing: client results. Our main comparison uses 12 criteria. This one focuses on published proof. That means case studies with data, revenue numbers, and citation gains.
The difference matters. An agency can have a great method but little proof it works. The top agencies here have the most verifiable results data.
What is an AI SEO agency?
An AI SEO agency helps businesses get cited and recommended inside AI search platforms: ChatGPT, Google AI Overviews, Gemini, Perplexity, Claude, and Copilot. The work is different from traditional SEO. Rankings are not 10 blue links. Results are citations, mentions, and recommendations inside generated answers.
A good AI SEO agency will cover five areas: crawler access (how AI crawlers read your site), entity signals (who you are across the web), content structure (questions answered cleanly), schema markup, and ecosystem validation (brand mentions, citations, YouTube). Most UK agencies still mainly do Google SEO. The agencies on this page specialise in AI visibility.
How to choose an AI SEO agency
Four questions to ask before you sign:
- Which AI platforms do they actually track? Some agencies only look at Google AI Overviews. Good ones track at least ChatGPT, Gemini, Perplexity, and AI Overviews. See our platform comparison for why coverage matters.
- Can they show real citation data? Not just rankings. Actual screenshots of mentions inside AI answers. Read our guide on how to track AI citations.
- What is the pricing model? Monthly retainer, project-based, or hybrid. See our full cost guide for benchmarks.
- Do they publish their method? Agencies with published methodologies are more accountable. Read our own methodology for what independent review looks like.
Not sure which agency fits your business? Try the Agency Matcher. Five questions, top 3 matches, free.
AI SEO Agencies Ranked by Client Results
| # | Agency | Best For | Platforms | Pricing | Results Score |
|---|---|---|---|---|---|
| 1 | First Page Sage | B2B companies wanting the most documented client results | 4 platforms | From £2,400/mo | 9.4/10 |
| 2 | iPullRank | Fortune 500 companies needing proven enterprise-scale results | 5 platforms | From £8,000/mo | 9.2/10 |
| 3 | Directive Consulting | B2B SaaS companies wanting AI SEO tied to revenue metrics | 3 platforms | From £4,000/mo | 9/10 |
| 4 | Siege Media | Brands wanting AI visibility through original content and digital PR | 3 platforms | From £3,200/mo | 8.7/10 |
| 5 | Onely | Enterprise companies needing technical AI monitoring with measurable results | 5 platforms | Contact for quote | 8.5/10 |
| 6 | Omniscient Digital | B2B SaaS companies wanting entity-driven AI citation results | 4 platforms | From £4,000/mo | 8.3/10 |
| 7 | Rank4AI | UK businesses wanting a framework-driven AI SEO approach | 6 platforms | Contact for quote | 8.1/10 |
Detailed Reviews
First Page Sage
First Page Sage has the longest track record of published client results in AI SEO. Their case studies document measurable increases in AI citations across ChatGPT and Gemini for B2B brands, with before-and-after data spanning 18+ months. They pioneered AEO methodology in 2023 and have been publishing results data ever since - giving them the most extensive evidence base of any agency in this comparison.
Strengths
- Most published case studies with measurable outcomes
- 18+ months of results data across AI platforms
- 4.9/5.0 review score from verified clients
- Named experts with published citation research
Limitations
- US-based - limited UK market experience
- Premium pricing from £2,400/mo
- B2B focus means less DTC or ecommerce evidence
iPullRank
iPullRank works with Fortune 500 companies and has case studies from some of the largest brands in the world. Their Relevance Engineering methodology has been applied at enterprise scale, and their results tend to be measured in millions of impressions and significant lifts in AI-generated citation rates. Mike King publishes regularly on what has worked at this scale.
Strengths
- Fortune 500 case studies with enterprise-scale data
- Relevance Engineering delivers measurable citation lifts
- Mike King publishes detailed technical results
- 5 AI platforms covered including Claude
Limitations
- Enterprise pricing - minimum £8,000/mo
- Results data skewed toward very large brands
- Less relevant for SMB-scale projects
Directive Consulting
Directive measures AI SEO success differently from most agencies - they tie everything back to sales pipeline. Their published results show how AI search visibility translates directly into qualified leads and revenue for B2B SaaS companies. This pipeline-generation approach means their case studies include actual revenue figures, not just visibility metrics.
Strengths
- Results measured in pipeline and revenue, not impressions
- Published case studies with actual revenue figures
- Strong integration of AI SEO with demand generation
- Customer Generation methodology is well-documented
Limitations
- B2B SaaS only - no evidence outside this vertical
- Mid-to-enterprise pricing
- Only 3 AI platforms monitored
Siege Media
Siege Media has built strong evidence that content-led AI SEO works. Their results show that original research, data studies, and expert-sourced content earn significantly more AI citations than optimised commodity content. Published case studies demonstrate how digital PR assets designed for traditional link building also earn high-quality citations in ChatGPT and Gemini responses.
Strengths
- Content-led approach with documented citation results
- Original research assets earn both links and AI citations
- Strong evidence base across consumer and B2B brands
- Established agency with multi-year track record
Limitations
- Content-first approach takes longer to show results
- Less technical infrastructure work than specialist agencies
- US-focused - limited UK market evidence
Onely
Onely's results come from a technical monitoring angle. They built cross-platform AI search tracking before most agencies knew it was needed, and their client results demonstrate how fixing technical crawlability and rendering issues directly improves AI citation rates. Their published data on how AI crawlers interact with JavaScript-heavy sites has become a reference point for the industry.
Strengths
- Monitors 5 AI platforms with measurable before-and-after data
- Published research on AI crawler behaviour is industry-leading
- Technical fixes show fast, measurable citation improvements
- Deep infrastructure for ongoing AI visibility tracking
Limitations
- Not UK-based - Poland headquarters
- More technical than strategic
- Enterprise focus means higher minimums
Omniscient Digital
Omniscient Digital specialises in entity optimisation for B2B SaaS companies, and their client results demonstrate how structuring content around entities - rather than keywords - dramatically improves AI citation rates. Their case studies show growth-stage tech companies going from zero AI mentions to consistent citations across ChatGPT and Gemini within 6 months.
Strengths
- Entity optimisation results documented across multiple SaaS clients
- Zero-to-citations case studies within 6-month timelines
- Published research on how LLMs map knowledge domains
- Content architecture methodology with measurable outcomes
Limitations
- B2B SaaS only - no results outside this vertical
- Smaller agency with limited capacity
- Austin-based, less enterprise pedigree
Rank4AI
Rank4AI is the only UK-based agency in this comparison with a proprietary AI SEO framework. Their Five Signal Model covers Identity Clarity, Subject Authority, Meaning Architecture, Ecosystem Validation, and Signal Consistency - and their published audit results show how applying this framework improves visibility across 6 AI platforms. Still a newer agency with fewer published case studies than the US leaders.
Strengths
- Covers 6 AI platforms - most in this comparison
- Proprietary Five Signal Model with published audit results
- UK-based with UK market understanding
- Built for AI search from day one
Limitations
- Fewer published case studies than established US agencies
- UK-focused - limited global evidence
- Smaller team than enterprise competitors
How This Ranking Differs From Our Main Comparison
Our main comparison scores 115+ agencies across 12 criteria. First Page Sage leads at 9.5/10. Rank4AI sits at #3.
This page uses one criterion: client results. Agencies with strong published proof rank higher. Those with good methods but fewer case studies rank lower. Rank4AI drops from #3 to #7 here. As a newer agency, they have fewer published results.
Neither ranking is more correct. Use our main comparison to assess overall strength. Use this page to see who has the most proof of delivery.
Frequently Asked Questions
What is the best AI SEO agency in 2026?
First Page Sage (9.4/10) leads for client results, with the longest track record of published AI SEO case studies. iPullRank (9.2) leads for enterprise with Fortune 500 evidence. Directive Consulting (9.0) is best for B2B SaaS companies wanting pipeline-tied results.
What is the difference between AI SEO and AI search optimisation?
AI SEO focuses on getting your content cited by AI search engines like ChatGPT, Gemini, and Perplexity. AI search optimisation is broader. It also covers technical setup, entity structure, and ecosystem signals. In practice, most agencies use both terms the same way.
How much does AI SEO cost?
Prices range from £2,400/month (First Page Sage) to £8,000+/month (iPullRank). Most agencies charge £3,200-£4,000/month. UK agencies like Rank4AI offer contact-for-quote pricing.
Which AI SEO agency is best for the UK?
Rank4AI (8.1/10) is the only UK-based agency here. It covers 6 AI platforms with the Five Signal Model. First Page Sage and Onely also serve UK clients. See our Top AI SEO Agencies UK comparison.
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Oliver Mackman
AI Search Analyst, SEOCompare
Oliver leads SEOCompare's editorial and comparison research. With over a decade in digital marketing, he oversees agency evaluation, tool testing, and AI search data analysis.
Last reviewed: 7 April 2026
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