15 Top AI SEO Agencies USA - 2026 Ratings & Reviews

The agency that coined AEO (Answer Engine Optimisation) back in 2023, giving them a two-year head start on the rest of the market. Combines long-form thought leadership with entity architecture and structured data to earn citations across ChatGPT, Gemini, and Perplexity. 15+ years in B2B content marketing means they understand how to position brands as authoritative sources, not just optimise pages.

Mike King's enterprise-grade agency that pioneered the concept of Relevance Engineering - treating AI visibility as an engineering discipline rather than a marketing tactic. Works with Fortune 500 companies on technical AI search infrastructure including entity mapping, knowledge graph optimisation, and RAG pipeline visibility. Their technical depth is unmatched in the US market.

Pipeline-focused B2B SaaS agency that measures AI search success by revenue generated, not rankings or impressions. Their Customer Generation methodology connects AI visibility directly to sales pipeline, making it easy for SaaS companies to calculate ROI. Strong integration between AI search, paid media, and content strategy.

Austin-based agency specialising in entity architecture and topical authority for AI search. Their approach starts with mapping how AI models understand a brand's knowledge domain, then builds content that fills entity gaps. Strong focus on B2B technology companies and SaaS businesses looking to become the cited authority in their category.

Digital PR and content-led agency that has extended its link-building expertise into AI citation earning. Their approach focuses on creating the kind of original research, data studies, and expert content that AI models prefer to cite. Strong track record of producing content that earns both traditional backlinks and AI citations simultaneously.

One of the largest US digital agencies with proprietary MarketingCloudFX technology that includes AI search tracking capabilities. Their scale means they can offer AI search services at more accessible price points than boutique agencies. Good fit for mid-market companies wanting AI visibility as part of a broader digital marketing programme.

Affordable, no-lock-in agency that has added AI search optimisation to its established digital marketing suite. Good entry point for businesses exploring AI search for the first time without committing to high monthly retainers. Transparent pricing and month-to-month contracts reduce the financial risk of starting an AI search programme.

Growth marketing agency with a startup and SaaS focus that has built AI search capabilities into its growth experimentation framework. Treats AI visibility as one growth channel within a broader experimentation programme, running structured tests to identify what drives AI citations for each specific client. Good for venture-backed companies comfortable with rapid experimentation.

Eric Siu's growth marketing agency that has been early to adopt AI search strategies, partly driven by Siu's public commentary on how AI is reshaping search. Their approach blends content marketing, SEO, and AI optimisation into a unified growth programme. Strong thought leadership presence through the Marketing School podcast.

New York agency focused on brand authority and reputation that has extended into AI search visibility. Their angle is that AI models heavily weight brand signals, reputation data, and authoritative mentions - so building brand authority is the most effective long-term AI search strategy. Good for companies where brand perception directly impacts buying decisions.

Won Agency of the Year for SEO in 2025, with a dedicated AEO and GEO practice built in partnership with Profound. Combines performance marketing with AI search optimisation, delivering measurable visibility gains across ChatGPT, Gemini, and AI Overviews. Their partnership with Profound provides enterprise-grade entity and knowledge graph technology that strengthens AI citation quality.

San Diego-based agency reporting a 458% AI visibility boost for clients. Has a dedicated VP of GEO (Karen Devlin) leading their generative engine optimisation practice. Combines established SEO and digital marketing expertise with a structured GEO methodology. One of the first major US agencies to create a dedicated GEO leadership role.

Enterprise agency that integrates GEO with traditional SEO through a strong E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) focus. Their approach builds the kind of deep content authority that both Google and AI engines reward. Particularly strong at aligning owned media strategy with AI search visibility for large brands.

Authority-building agency that establishes AI visibility baselines and measures improvement over time. Their methodology focuses on building the domain authority, entity clarity, and content depth that AI engines use to evaluate source credibility. Particularly good at helping brands understand where they currently stand in AI search before investing in optimisation.

LLM visibility agency combining link building and digital PR to earn AI citations. Their thesis: the same signals that earn high-quality backlinks (authoritative mentions, PR coverage, expert citations) also influence how LLMs evaluate and cite sources. Integrates traditional link authority with AI-specific citation strategies for a combined visibility approach.