More than 60% of enterprise search queries are already answered by AI-generated content, such as Google AI Overviews, ChatGPT, Perplexity, and Claude, but most SEO providers are still focused on blue links and keyword positions.
Conventional search strategies will not prepare brands for the future. In the coming years, generative AI will dominate search; brands require SEO agencies that understand how to optimize for multiple generative AI engines, not only Google, using technical methods that make their content machine-readable.
These agencies reverse-engineer language models to ensure their clients’ content is selected by AI engines, measure selection rates within AI responses, and create structured markup that AI search models can parse.
We assessed each firm based on its demonstrated expertise in GEO and other forms of AI optimization, technical depth in optimizing for machine readability, success working with enterprise-level clients on measurable AI visibility, and proprietary methodology or tools for measuring AI search. The following four firms stood out above the rest. Here’s how the top 4 rank.
The Generative Engine Optimization Shift in 2026
The age of conventional SEO is over. With generative AI rapidly changing how users find answers, most SEO agencies simply aren’t up to speed. This list of companies builds brand presence across AI Overviews, ChatGPT, and Perplexity through technical solutions designed to be understood by machines.
Google’s AI Overviews already cover 40% of commercial intent queries. Meanwhile, ChatGPT and Perplexity pull millions of searches away from traditional “blue links” every month.
While most SEO services still target web crawlers and backlink strategies suited for 2015, modern SEO demands machine-readable structured data, sentiment management within LLMs, and citation optimization across multiple AI platforms. If your brand doesn’t optimize its digital footprint in these channels, you’re missing out on where buyers look today.
These agencies reverse-engineer LLM logic, calculate selection rates per AI engine, and apply technical tactics that ensure your content can be pulled by generative engines, rather than just indexed by old-school crawlers.
Top 4 Generative Engine Optimization Agencies
This list compares four agencies based on their GEO services, technical SEO capabilities, AI search approaches, and experience with complex websites.
Organic Hackers
Organic Hackers takes a tech-first, revenue-driven approach to SEO for large websites. Its services combine Advanced Technical SEO, Shopping-First Strategy, SEO-Proof Website Migrations, Strong Site Structure, and Generative AI Search + SEO optimization.
A key part of its offering is directing and monitoring internal or external developer teams. Organic Hackers provides clear technical specifications for technologies such as Shopify Liquid, React/Next.js, and server configurations, with a focus on accurate implementation and measurable growth within 6–12 months.
The agency also provides systematic technical oversight to address root-level issues such as multi-market subfolder cannibalization, JavaScript rendering delays, and crawl budget leaks, with the goal of restoring indexation health. Organic Hackers states that this approach can scale organic search performance by 2x–5x over 6–12 months.
For AI search, the agency focuses on optimizing site architecture for easier retrieval by Google AI Overviews, ChatGPT, and Perplexity. Custom monitoring dashboards support this work. Organic Hackers also offers a free Tech SEO Audit session.
- Advanced Technical SEO + Shopping-First Strategy for large ecommerce websites
- SEO-Proof Website Migrations and Strong Site Structure
- Developer direction, technical specifications, and implementation monitoring
- Technical oversight for crawling, rendering, and indexation issues
- LLM retrieval optimization across Google AI Overviews, ChatGPT, and Perplexity
- Custom monitoring dashboards for AI search
- Free Tech SEO Audit session
Where It Stands Out
Organic Hackers combines advanced technical SEO with ecommerce and AI search optimization. Its offering includes SEO-proof website migrations, Shopping-First Strategy, strong site structure, and direct developer guidance for complex technical implementations.
The agency also focuses on optimizing site architecture for easier retrieval across Google AI Overviews, ChatGPT, and Perplexity, supported by custom monitoring dashboards.
This combination is relevant to large ecommerce websites managing complex technical requirements alongside traditional and AI-driven search.
DEJAN
DEJAN is an Australian SEO agency focused on technical SEO and AI search optimization. Its services cover platforms such as Google AI Overviews, ChatGPT, Claude, and Perplexity, with an emphasis on how brands and information are represented in AI-generated responses.
The agency developed Selection Rate Optimization (SRO), an approach designed to measure how likely an AI model is to select or cite a brand. Its other services include machine-readable technical SEO, AI sentiment analysis, hallucination mitigation, and Google Search Grounding.
DEJAN also publishes research and frameworks related to generative search and AI retrieval. Its services are offered to businesses working across traditional search and emerging AI-driven search platforms.
- Selection Rate Optimization (SRO) methodology
- Google AI Overviews, ChatGPT, Claude, and Perplexity coverage
- Machine-readable technical SEO
- AI sentiment analysis and hallucination mitigation
- Google Search Grounding services
Where It Stands Out
DEJAN combines technical SEO with services focused specifically on how brands are represented in AI-generated search results. Its SRO approach provides a framework for measuring AI selection and citation, while its machine-readable SEO and Google Search Grounding services address technical aspects of AI search visibility.
Greenlane Marketing
Greenlane Marketing is a digital marketing agency that offers SEO, paid media, UX, and analytics. On the SEO side, the work covers technical SEO, on-page optimization, content, link acquisition, and local SEO.
The agency builds its approach around each client’s specific needs instead of following a fixed playbook. Because the service mix is broader, technical SEO and search optimization can sit alongside paid media, user experience, and analytics.
Greenlane also talks about experience, expertise, and authority in the context of search and AI-driven visibility. The services can support both local and national businesses that need a wider search marketing setup.
- Technical, on-page, off-page, and local SEO
- Paid media, UX, and analytics services
- Strategies tailored to individual client requirements
- Search visibility considerations for traditional and AI-driven search
Where It Stands Out
Greenlane combines SEO with paid media, UX, and analytics rather than focusing exclusively on technical or AI search optimization.
This broader service model can be relevant to businesses that want search optimization alongside other digital marketing activities.
Brainlabs Digital
Brainlabs Digital is a digital marketing agency combining SEO, media, analytics, and creative services. Its approach emphasizes measuring marketing activity against business and revenue outcomes rather than relying only on platform-specific metrics.
The agency uses methods such as incrementality testing, multi-touch attribution, media mix modeling, and revenue-based planning to evaluate marketing performance. These capabilities can be applied across paid media and organic search as part of a broader measurement strategy.
Brainlabs also works with AI tools and platforms including Semrush, SEOClarity, Claude, and Amazon Marketing Cloud. Its broader service model makes it relevant to enterprise brands looking to combine SEO with media, analytics, and measurement.
- SEO, media, analytics, and creative services
- Incrementality testing, multi-touch attribution, and media mix modeling
- Revenue-focused planning and performance measurement
- Work with AI and marketing platforms
Where It Stands Out
Brainlabs combines SEO with media, analytics, and measurement rather than positioning itself solely as a GEO agency. Its measurement capabilities can help businesses assess organic search and paid media as part of a broader marketing strategy.
How to Choose the Right Generative Engine Optimization Agencies
AI search demands expertise traditional SEO shops don’t have. Focus on agencies that engineer visibility across multiple AI platforms, not just Google.
- Proven AI search track record — Request evidence of specific AI Overviews wins, ChatGPT mentions, or Perplexity spotlights. Request pre/post metrics from your AI visibility efforts, not just general traffic charts.
- Technical model understanding — Look for teams that deconstruct how large language models work and optimize machine-readable markup, not just content keyword density.
- Enterprise measurement capability — Confirm that they monitor AI search visibility independently of organic traffic via their own proprietary software, rather than using pre-built GA4 reports.
- Multi-platform coverage — Make sure they optimize for Google AI Overviews, ChatGPT, Claude, and Perplexity all at once, and aren’t treating AI Search as a side hustle.
- Methodology transparency — Ask for the agency’s GEO process documents; if they use in-house methods, they should be able to describe how they track selection rates and sentiment reduction.
- Client scale fit — Align their average project scale with your own; enterprise GEO is not built with the same resources as those of an SMB.
How to Shortcut This List
Your priority dictates your pick: deep AI search expertise, full-service integration, or enterprise scale with revenue measurement frameworks.
- Best for AI-native GEO expertise: Organic Hackers, DEJAN.
- Best for full-service digital partnerships: Greenlane Marketing, Brainlabs Digital.
Conclusion
While generative AI is changing search, most traditional SEO agencies are still not ready. Brands should seek out a partner capable of driving visibility in AI Overviews, ChatGPT, and Perplexity using machine-readable tactics and strategy.
Those four companies are leading the charge. They all have demonstrated GEO expertise, tools to measure AI search performance, and enterprise clients that attest to their ability to drive measurable AI visibility.
Your best company match will depend on your technical needs, platform priorities, and whether you need a full-service solution or focused GEO support. Start by asking the above firms to conduct AI search audits aligned to your goals. Then, review their proprietary tools and measurement approaches and compare them to your own capabilities and visibility gaps.
Frequently Asked Questions
How is GEO different from traditional SEO?
Traditional SEO focuses largely on visibility in search engine results, while GEO also considers how AI systems retrieve, interpret, and cite information when generating responses. The two can overlap through technical SEO, content, and website architecture.
What should enterprise websites consider when implementing GEO?
Large websites may need to consider technical SEO, site architecture, structured and machine-readable content, crawling, rendering, entity information, and how content is presented to AI-driven search systems.
Can GEO companies also help with regular Google SEO?
Most agencies offer traditional SEO as well, but they specialize in machine-readable optimization, structured data, and other technical aspects that work with both AI and search engines.
They don’t focus heavily on keywords as traditional SEOs do, but they do understand the importance of content that’s optimized for AI and can help you with that. If you’re not interested in AI visibility and just want Google SEO, there are cheaper options out there.
Is it possible to measure the ROI of my presence in AI engines?
Measuring ROI for GEO is tricky because it doesn’t look exactly like Google Analytics. You can track things like branded mentions in AI responses, referral traffic from chatbots, and changes in share of voice compared to competitors.
Some agencies offer proprietary dashboards that let you track the “selection rate”, which is how often your brand appears in response to specific questions.