Ever since AI exploded into the mainstream, people have been quick to declare that SEO is dead. But at the same time, companies like Meta, OpenAI, and Anthropic have actively been hiring SEO leaders and investing heavily in organic search strategy.
What’s actually happening isn’t the death of SEO, it’s the evolution of it.
The rise of AI-powered search experiences, AI Overviews, ChatGPT, Claude, Perplexity, and other LLM-driven discovery platforms has created an entirely new optimization layer: LLM SEO.
But because the space is still so new, most businesses are struggling to understand what LLM SEO actually means, how it differs from traditional SEO, and which agencies genuinely know how to optimize for AI-driven discovery.
That’s exactly why we created this list.
In this blog, we’ll cover some of the best LLM SEO agencies in the US that are already making a strong mark in this space and helping brands stay visible in the age of AI search.
What Is LLM SEO and How Is It Different From Traditional SEO?
LLM SEO is the process of optimizing your brand, website, and content so it gets discovered, referenced, and recommended by AI-powered platforms like ChatGPT, Claude, Perplexity AI, AI Overviews, and other large language model (LLM)-driven search experiences.
Traditional SEO primarily focuses on improving rankings in search engines like Google through keyword targeting, backlinks, technical SEO, and SERP optimization.
LLM SEO, on the other hand, goes beyond rankings. It focuses on making your brand contextually understandable, trustworthy, and frequently referenced across the web so AI models can confidently surface your business in their responses.
Instead of just optimizing for clicks, LLM SEO is about optimizing for mentions, citations, topical authority, entity recognition, and AI-driven recommendations.
Best LLM SEO Agencies in the USA
Here are some of the best LLM SEO agencies in the US that are helping brands improve visibility across AI-powered search platforms and LLMs:
1. SEO Strategy Lab
SEO Strategy Lab helps brands move beyond traditional SEO into “Search Everywhere Optimization,” a model built for visibility across search engines, AI answers, and LLM-driven discovery platforms.
Instead of just improving rankings, they focus on a key shift in search: getting brands included in AI-generated answers. As users increasingly rely on tools like ChatGPT and Perplexity AI, their goal is to make brands the answer, not just a result. Their LLM SEO (LLMO) approach strengthens entity signals, content structure, and authority, helping AI systems to understand, cite, and recommend the brand.
What They Do
SEO Strategy Lab combines traditional SEO with AI-era search optimization, including:
- LLM SEO / LLM Optimization (LLMO)
- Answer Engine Optimization (AEO)
- Generative Engine Optimization (GEO)
- Entity & Semantic SEO
- Technical SEO & crawl optimization
- Structured data & schema implementation
- Authority building for AI citations
- Reddit and Quora visibility strategy
- Content distribution
- Search intelligence & prompt testing
Their LLM SEO Approach
Their process is designed specifically for AI visibility:
- Visibility audits across AI tools to identify where brands appear (or don’t)
- Content structuring so AI systems can extract and cite information
- Authority building through third-party mentions and ecosystem signals
- Prompt testing & optimization to understand how AI responds to categories
- Continuous iteration based on AI inclusion and citation tracking
Why You Should Choose SEO Strategy Lab for LLM SEO
SEO Strategy Lab brings over a decade of experience helping B2B SaaS brands grow through organic search, now applied to the shift toward AI-driven discovery and LLM visibility.
They understand US B2B buyer behavior deeply, which helps them build strategies aligned with real purchase intent. Unlike most LLM SEO agencies, they don’t stop at citations or visibility; they design every effort to directly support pipeline and revenue growth.
Want to explore their approach in detail?
2. DeltaV Digital
DeltaV Digital is a US-based LLM optimization agency that blends SEO, content strategy, technical optimization, and paid media into a single system. Founded in 2014, they work with enterprise and multi-location brands to build search visibility that compounds across channels instead of operating in silos.
In the context of LLM SEO, DeltaV Digital focuses on helping brands become structurally and contextually eligible to be cited in AI-generated answers across platforms like ChatGPT and Perplexity AI. Their approach is built around strengthening entity authority and making content understandable and retrievable for AI-driven search systems.
3. Omniscient Digital
Omniscient Digital is an Austin-based organic growth agency helping B2B SaaS companies turn SEO and content into scalable growth systems. Their work has increasingly evolved toward LLM SEO, helping brands increase visibility in AI-driven search environments like ChatGPT, Claude, and Perplexity AI.
What differentiates them is their strong, content-led approach to authority-building. Instead of treating SEO as keyword targeting alone, they focus on creating structured, high-signal content that improves brand understanding across LLMs, increasing the chances of being referenced, cited, and recommended in AI-generated answers.
4. iPullRank
iPullRank is a New York City-based enterprise digital marketing agency known for pioneering “Relevance Engineering,” a framework that focuses on how brands are retrieved and cited in AI-driven search systems. Their work sits at the intersection of SEO, content strategy, and information retrieval for LLM platforms like ChatGPT and Perplexity AI.
What sets them apart is their highly technical approach to AI search. Instead of focusing on rankings alone, they study how LLMs retrieve and synthesize information, helping enterprise brands improve visibility in AI-generated answers through structured content, semantic relevance, and authority signals.
5. Embarque
Founded in 2020, Embarque is a revenue-focused SEO agency helping B2B SaaS companies adapt to AI-driven search, where visibility is increasingly determined by whether brands are cited inside tools like ChatGPT and Perplexity rather than just ranked on Google. Their focus is on turning search visibility into measurable pipeline impact, not vanity traffic metrics.
They position LLM SEO as a performance channel, combining structured content, entity optimization, and AI-citation strategies with a strong emphasis on tracking real outcomes like leads, conversions, and revenue influenced by AI search visibility.
6. Flow Agency
Flow Agency is a B2B growth marketing agency founded by Viola Eva, focused on helping SaaS and service companies improve visibility in AI-driven search environments. The team works across SEO and LLM optimization with a strong emphasis on making brands more discoverable and consistently referenced in AI-generated answers.
They take a structured, experimentation-led approach to improving AI search presence, aligning content, technical setup, and external signals so brands show up more reliably when users search through tools like ChatGPT and Perplexity.
7. Go Fish Digital
Go Fish Digital is a US-based agency operating across SEO, AI optimization, and digital marketing, focused on how brands are discovered in AI-led search environments as visibility shifts from keyword rankings to AI-generated answers across platforms like ChatGPT and Google AI Overviews.
They improve how brand information is structured and interpreted so it can be surfaced in generative search systems, strengthening the signals that influence whether and how brands are referenced in AI responses.
8. Thrive Internet Marketing Agency (Dallas, Texas)
Thrive is a Texas-based LLM SEO agency focused on helping brands stay visible as search shifts toward AI-driven platforms and zero-click results. Their work centers on improving how businesses appear across AI search systems by testing how content is surfaced, interpreted, and referenced by these models.
They emphasize adapting brand visibility for conversational and AI-generated search experiences, with strategies to increase discoverability, strengthen authority signals, and improve the likelihood of inclusion in AI-generated responses.
9. Ciphers Digital Marketing (Arizona, United States)
Ciphers Digital Marketing is an Arizona-based digital marketing agency focused on helping businesses improve search visibility and generate consistent, high-quality leads online. With experience across multiple industries, they focus on building long-term organic growth systems that drive measurable results.
They combine SEO, technical optimization, and content strategy to improve how brands appear across Google search and local results. The focus is on building structured, intent-driven visibility that increases inbound demand and turns organic traffic into measurable business growth.
How to Choose an LLM SEO Partner in the USA
Choosing the right LLM SEO agency means distinguishing real LLM expertise from repackaged SEO services. The right agency should already understand how AI platforms actually select and cite sources.
- Proven experience with LLM SEO across ChatGPT, Gemini, and Perplexity
- Real examples of clients being cited in AI-generated answers
- Clear methodology for content structure, semantic SEO, and entity building
- Platform-specific knowledge (how each AI system sources and ranks information differently)
- Focus on credibility signals, not just keywords or backlinks
- Transparent expectations on timelines and what AI visibility can realistically deliver
- Ongoing optimization approach, not one-time SEO fixes or audits
Avoid agencies that guarantee “rankings” in AI, rely only on keyword strategies, or cannot show real AI citations. The best partners focus on making your brand retrievable and trustworthy inside AI-generated answers, where modern discovery is increasingly happening.
Conclusion
AI search is reshaping how customers discover and trust brands, and the right LLM SEO partner determines whether you’re cited or invisible. Instead of relying on outdated tactics, focus on agencies that understand real AI visibility, structured optimization, and how generative engines surface credible information.
At SEO Strategy Labs, we help brands build AI-ready SEO strategies designed to improve visibility across generative search platforms and increase the chances of being cited where it matters.
