AI SEO (also called GEO (generative engine optimization) or AEO (answer engine optimization)) is a newer category focused on getting a brand cited inside ChatGPT, Google AI Overviews, Gemini, and Perplexity, rather than only ranking in traditional blue-link search results. Because the category is young, agencies vary widely in how long they’ve operated in this specific space versus how recently they’ve rebranded traditional SEO services as “AI SEO.”
Before comparing agencies, ask directly how long they’ve specifically worked on AI/LLM visibility, not just traditional SEO, and ask what they can actually show you: a citation report, a documented case study, or just a services page. The comparison below reflects what’s publicly documented for each agency as of 2027.
Quick Comparison: Best AI SEO Agencies
| Agency | Best For | Key Services |
|---|---|---|
| CiteVantage | Brands wanting a documented AI visibility audit | AI visibility audits, one-time sprints, monthly plans |
| iPullRank | Enterprise technical AI search | Enterprise AI search strategy, technical SEO |
| Siege Media | Content-led GEO at scale | Content marketing, GEO-focused content strategy |
| First Page Sage | Established B2B with long sales cycles | SEO, AI visibility, B2B content strategy |
| Foundation Inc | B2B tech and SaaS AI visibility | AI visibility strategy, B2B content, SEO |
| Loopex Digital | Budget-conscious SEO plus AI search visibility | SEO, AI search visibility, LLM-readable content |
| Omniscient Digital | B2B software content and organic growth | Organic growth strategy, B2B software content |
| Growth Marshal | Small businesses wanting AI agent visibility | Small business AI SEO, AI agent optimization |
| Single Grain | Startups to enterprise revenue-focused AI strategy | SEO, AI search, PPC, content, CRO |
| InboundREM | Real estate agents and brokerages | Real estate AI SEO, content publishing at scale |
How We Chose These Agencies
The Marketing Scout evaluates agencies using five factors: services and expertise, affordability, reviews and reputation, case studies and results, and communication and transparency. We research each agency using its own website, published case studies, publicly listed service information, and reputable third-party sources such as Clutch and industry rankings.
AI SEO (also called GEO or AEO) is a newer category than traditional SEO, so public track records are shorter and less standardized across agencies. We note where pricing or results weren’t publicly available rather than filling the gap. For more information, read our full Agency Review Methodology.
1. CiteVantage
Best for: Brands wanting a documented AI visibility audit before committing
CiteVantage is an agency founded in 2026, built specifically and exclusively around AI visibility across ChatGPT, Google AI Overviews, Gemini, Perplexity, and Copilot, rather than offering it as an add-on to traditional SEO.
Services & Expertise: Free AI visibility audits, one-time optimization sprints, and ongoing monthly plans focused specifically on citation and mention tracking across AI platforms.
Affordability: CiteVantage reports a free $0 audit tier, with paid plans reported between $249 and $899 per month; confirm current pricing directly.
Case Studies & Results: CiteVantage currently features five case studies covering ecommerce, real estate, multilingual SEO, local SEO, and AI automation.
Reported results include a 290% increase in organic clicks in 18 days for RIPT Apparel, 92 SEO articles and 90 backlinks in 30 days for Bright Realty, and a 30% organic traffic increase in two months for Volcano Travelers.
Another ecommerce campaign achieved a 40% traffic increase in two months, while its AI workflow updated 5,000 meta titles in three days.
These results are based on CiteVantage’s own case studies and reporting.
Communication & Transparency: CiteVantage advertises a “90-day cited or we run a second full sprint free” guarantee, according to its own marketing.
2. iPullRank
Best for: Enterprise technical AI search strategy
iPullRank positions itself as a pioneering agency specifically for enterprise and mid-market AI search work, leaning on deep technical SEO roots applied to the newer AI visibility problem.
Services & Expertise: Enterprise-level technical AI search strategy, building on traditional technical SEO auditing and implementation.
Case Studies & Results: iPullRank publishes six case studies across ecommerce, finance, automotive, telecom, mortgage, and AI search.
Reported results include $2.4 billion in incremental revenue for a mortgage client, $290 million in revenue and 175% revenue growth for an ecommerce marketplace, and 13 million more organic visits in two years for a major car publisher. More recent AI search work reports a 253% increase in AI Overview visibility for a telecom brand and a 278% increase in AI Overview visibility for a self-storage company.
3. Siege Media
Best for: Content-led GEO at scale
Siege Media positions itself as a full-service GEO agency built around content production specifically, on the premise that AI answer engines favor comprehensive, well-structured content over technical signals alone.
Services & Expertise: Content marketing and GEO-focused content strategy designed for scale across many pages or topics.
Case Studies & Results: Siege Media currently showcases 81 case studies across SaaS, fintech, ecommerce, health, cybersecurity, real estate, and other industries. Reported wins include $5.8 million in organic traffic value growth for AAA, $1.7 million in traffic value for Shutterfly, and 3,500+ links earned for Huntress in 15 months. Other campaigns include 540% organic traffic growth for Stash and 16,500 links earned for Credit.com.
4. First Page Sage
Best for: Established B2B brands with long sales cycles
First Page Sage brings an established SEO track record into the AI visibility space, aimed specifically at B2B companies where the sales cycle is long enough that brand visibility across both traditional and AI search matters over time.
Services & Expertise: SEO, AI visibility strategy, and B2B content strategy positioned around long-term organic growth.
Case Studies & Results: First Page Sage showcases case studies across SEO, GEO, SaaS, legal, healthcare, and technology. Reported results include $5.3 million in annual revenue for a software development client, $4.7 million in revenue for a digital verification company, and an estimated $2.3 million in incremental revenue for a plastic surgeon.
Other results include a 934% increase in keyword rankings for Cadence Design Systems and qualified monthly leads growing from 214 to 2,640 for an AI writing platform.
5. Foundation Inc
Best for: B2B tech and SaaS AI visibility
Foundation Inc positions itself specifically as an AI visibility agency for B2B tech and SaaS companies, narrowing its focus to one industry vertical rather than serving general businesses.
Services & Expertise: AI visibility strategy, B2B content production, and SEO tailored to technology and software companies.
Affordability: Pricing is not publicly available. Contact the agency for a custom quote.
Case Studies & Results: Specific named case studies were not available in the sources reviewed for this article (source to be verified).
6. Loopex Digital
Best for: Budget-conscious SEO plus AI search visibility
Loopex Digital combines general SEO and AI search visibility work under one broader service umbrella, at a lower reported price point than several other agencies in this category.
Services & Expertise: SEO and AI search visibility work, including making page content available as clean markdown files specifically formatted for language models to read.
Affordability: Pricing is reported at around $1,500 per month, based on the agency’s own published information; confirm current pricing directly.
Case Studies & Results: Specific named case studies were not available in the sources reviewed for this article (source to be verified).
Communication & Transparency: The markdown/LLM-readable file offering is a specific, checkable deliverable rather than a vague promise, which is worth confirming directly if it’s the reason you’re considering this agency.
7. Omniscient Digital
Best for: B2B software content and organic growth
Omniscient Digital frames itself as an organic growth agency specifically for B2B software companies, with content strategy as its primary lever for both traditional and AI search visibility.
Services & Expertise: Organic growth strategy and B2B software-focused content production.
Affordability: Pricing is reported at around $10,000, based on the agency’s own published information; confirm current scope and terms directly.
Case Studies & Results: Specific named case studies were not available in the sources reviewed for this article (source to be verified).
8. Growth Marshal
Best for: Small businesses wanting AI agent visibility
Growth Marshal is positioned specifically toward small businesses, offering tiered pricing that’s notably more accessible than most of the enterprise-leaning agencies in this category.
Services & Expertise: AI SEO and AI agent optimization aimed at small business budgets and needs.
Affordability: Pricing is reported in tiers between $475 and $1,150 per month, based on the agency’s own published information, among the more accessible options in this list.
Case Studies & Results: Specific named case studies were not available in the sources reviewed for this article (source to be verified).
9. Single Grain
Best for: Startups to enterprise seeking revenue-focused AI strategy
Single Grain extends its broader revenue-focused digital marketing approach into AI search, positioned for companies ranging from early-stage startups to large enterprises.
Services & Expertise: SEO, AI search strategy, PPC, content, and CRO, with AI visibility treated as one channel within a broader strategy.
Case Studies & Results: Specific named AI SEO case studies were not available in the sources reviewed for this article (source to be verified).
10. InboundREM
Best for: Real estate agents and brokerages
InboundREM narrows its entire focus to real estate agents specifically, applying AI SEO and content publishing to a single industry rather than working generally.
Services & Expertise: Real estate-specific AI SEO and large-scale content publishing.
Case Studies & Results: The agency reports having published roughly 750 pages of content since around 2017, according to its own published figures; specific ranking or lead-generation outcomes were not available in the sources reviewed for this article (source to be verified).
How to Choose the Right AI SEO Agency
Ask how long the agency has specifically worked on AI/LLM visibility, not just traditional SEO. Because “AI SEO” is a newly popular label, some agencies have real, dedicated experience while others have simply relabeled existing SEO services, the distinction matters for what you’re actually paying for.
Ask for a specific, checkable deliverable rather than a vague promise. Loopex Digital’s LLM-readable content files and CiteVantage’s citation audits are examples of concrete things you can verify; “we optimize for AI search” alone is not.
Be skeptical of guarantees in a category this new. A “cited in 90 days or we redo it free” guarantee (like CiteVantage’s) is a real commitment worth asking detailed questions about: what counts as “cited,” and on which platforms specifically.
Check whether case study numbers are attributed to the agency or independently verified. Most agencies in this category report their own results without third-party verification, which doesn’t make them false, but does mean you should ask for methodology details before treating a number as fact.
Consider your industry’s AI answer engine presence today before investing heavily. Some categories (ecommerce, local services) already show up frequently in AI answers; others barely appear yet, which changes how much near-term impact is realistic.
Match the agency to your company size. Growth Marshal’s tiered small-business pricing and InboundREM’s real estate focus suit very different budgets and needs than NoGood or Single Grain’s enterprise-level engagements.
Finally, ask what happens to your existing SEO work while AI-specific optimization is layered on top, a good agency should be able to explain how the two efforts support rather than compete with each other.
Final Thoughts
AI SEO is genuinely new enough that “best” is harder to prove here than in traditional SEO, PPC, or web design, most of the results discussed above are reported by the agencies themselves rather than independently verified. That doesn’t make the category worthless, but it does mean asking sharper, more specific questions before committing budget.
Start with a smaller engagement or an audit (several agencies here, like CiteVantage, offer one) before a large monthly retainer, and reassess after you’ve seen concrete, checkable evidence of movement in AI answer visibility.
Frequently Asked Questions
What is AI SEO or GEO, exactly?
AI SEO (also called GEO, generative engine optimization, or AEO, answer engine optimization) is the practice of optimizing content so it gets cited or mentioned inside AI tools like ChatGPT, Google AI Overviews, Gemini, and Perplexity, rather than only ranking in traditional search results.
Is AI SEO different from traditional SEO?
It overlaps significantly with technical SEO and content quality work, but adds a specific focus on how AI models parse, summarize, and cite content, which isn’t identical to how traditional search engine crawlers rank pages.
How much does an AI SEO agency cost?
Reported pricing among the agencies in this list ranges widely, from around $475/month for small business tiers (Growth Marshal) up to $20,000+/month for enterprise engagements (not shown above but reported elsewhere in this category). Get a specific quote based on your business size.
Can I measure AI SEO results reliably?
This is an evolving area, and most agencies report their own citation or visibility tracking rather than using a single, industry-standard measurement tool. Ask exactly how an agency tracks AI citations before assuming the metric is directly comparable across agencies.
Should a small business bother with AI SEO yet?
It depends on your industry’s current AI answer engine presence. Some categories already appear frequently in AI answers, while others barely do yet; an audit (several agencies here offer one, sometimes free) is a low-risk way to find out before committing to a retainer.
Are AI SEO agency guarantees legitimate?
Guarantees like a ’90-day cited or redo it free’ offer (from CiteVantage) are real commitments, but ask specifically what counts as success (which platforms, what counts as a citation) before assuming the guarantee covers what you expect it to.
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