AI SEO Agency:
Get Recommended by ChatGPT, Google AI and Perplexity
Castle's AI SEO services helps brands get discovered, cited and recommended inside AI-generated answers.
Castle is a specialist AI SEO agency working with brands who want to be visible inside ChatGPT, Google AI Overviews, Perplexity, Copilot, Gemini, Claude and other AI powered search models. Our AI SEO services bring together generative engine optimisation (GEO), answer engine optimisation (AEO) and proven SEO fundamentals into one managed programme. Our AI SEO specialists audit, restructure, and optimise your content so AI platforms can read and trust it, and build citations and authority signals that get you recommended directly in their answers.
- GEO specialists
- AEO agency
- AI SEO services
- AI search optimisation
- LLM optimisation
- AI visibility tracking
- Traditional SEO + GEO + AEO
What's included
What's included in our AI SEO services
Working with Castle as your AI SEO agency gets you a complete, managed AI search engine optimisation service, with ongoing content creation and optimisation to ensure your site stays visible and relevant. Our AI SEO service breaks down into several areas:
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AEO, GEO and AI visibility audit
We map exactly where your brand currently appears, and where it doesn't, across ChatGPT, Perplexity, Google AI Overviews and Copilot, check whether AI crawlers can even access your site, and benchmark you against competitors who are already being cited.
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AI SEO strategy building
Based on the audit, we then develop an AI SEO strategy that improves your visibility across all AI search platforms. Our AI SEO experts identify opportunities, monitor your AI search performance and continually refine and adapt your strategy as AI search evolves.
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Structured content and schema
We rewrite and restructure your content to answer real customer questions clearly and directly, and add the schema markup that helps AI models understand exactly what you do and who you serve.
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Technical AI SEO and UX
Our technical AI SEO experts optimise your website to enhance performance, accessibility and AI visibility. We complete technical SEO audits, ensure crawlability from both Google and AI search bots, add structured data, metadata, look at page speed and identify any other opportunities to enhance user experience and help both traditional search engines and AI search platforms better crawl and understand your site.
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Citation and authority building
We build the off-site signals AI platforms cite most heavily, strengthened directory and review profiles, digital PR and roundup placements, a deliberate presence on Reddit and Quora, and consistent business information across the web.
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Ongoing tracking and reporting
We monitor how often, and where, your brand is mentioned across AI platforms, test the real questions your audience are asking, and refine your strategy as algorithms and AI search evolves.
Why AI SEO
Why do I need an AI SEO agency?
AI search is changing the rules of visibility and how consumers discover brands and engage with products and services. Ensuring your brand is visible in these searches is more important than ever if you don't want to risk falling behind.
Keywords and rankings still matter, but they're now only part of the picture. Your content also needs to demonstrate authority, provide clear answers and give AI platforms the right signals to understand who you are and what you offer so they can recommend you when your brand is relevant.
Effective AI SEO isn't a one-off optimisation. It requires ongoing work across your content, entities, structured data, technical SEO, citations and wider digital authority. As AI search platforms continue to develop, the factors influencing which brands and sources they surface will develop with them.
Working with an experienced AI SEO agency gives you a dedicated team to manage this process. At Castle, we combine GEO, AEO and traditional SEO to build your AI SEO visibility across both traditional and AI search, continually monitoring performance and adapting your strategy as search evolves.
This means that effective AI SEO from a specialist AI SEO agency can help you not just gain more traffic, but more highly convertible traffic from audiences that are further along in the buying journey.
Get a free AI visibility auditAI platforms
Which AI platforms we optimise for
AI search isn't one platform. Our AI SEO services are built to increase your visibility across all of the tools your customers are already using to research and compare businesses.
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ChatGPT
We optimise your content and wider brand presence to improve its chances of being discovered, understood and cited within conversational ChatGPT search results.
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Google AI Overviews AI Mode
We combine GEO with strong technical and traditional SEO foundations, helping Google understand your content and surface it as a supporting source within its generative search experiences.
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Perplexity
With sourcing at the heart of the platform, we focus on creating clear, authoritative and well-supported content that can be retrieved and referenced in response to relevant searches.
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Microsoft Copilot
We strengthen the authority, structure and discoverability of your content to increase its visibility across Microsoft's AI-powered search and Copilot experiences.
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Google Gemini
We optimise for clear entities, topical authority and trustworthy, well-structured information that Google's AI systems can understand and use when generating relevant responses.
Our specialists build an AI SEO strategy around complete AI visibility, rather than optimising for a single platform.
Industry fit
AI SEO strategies built for your industry
How people use AI search varies considerably between industries. Someone comparing SaaS platforms in ChatGPT has different questions and priorities than someone looking for a solicitor, healthcare provider or hotel recommendation in a specific city. That's why we don't take a one-size-fits-all approach. We build your AI SEO strategy around your industry, your audience, and the questions potential customers are asking throughout their search journey. Some of the industries we've previously worked with include:
- SaaS
- Ecommerce
- Finance
- Healthcare
- Property
- Legal
- Education
- Professional services
- Technology
- Travel and hospitality
Results
AI SEO results
AI-referred traffic already converts far better than traditional organic search. Ahrefs reports it converting up to 23x higher than standard organic search, generating over 12% of signups from just 0.5% of total traffic. That's the scale of opportunity a well-executed AI SEO programme is built to capture.
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Why now
Why does my brand need AI SEO now?
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900M
Weekly active ChatGPT users
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2BN
Google AI Overviews monthly users
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1BN
Google AI Mode monthly users
Being discoverable in AI search is increasingly becoming a key priority for brands who want to future-proof their business. Now is the time to start optimising, before your competitors do and competition increases. Early adopters benefit from greater authority in the long-run simply for getting in early and laying the AI SEO groundwork.
The way people search is changing fast. ChatGPT reports over 900 million weekly active users, while Google AI overviews reach 2 billion monthly users, and Google's AI mode surpassed one billion monthly users in May 2026. Data from Semrush suggests that AI search traffic may surpass traditional search traffic by 2028, too.
AI is changing the way people discover brands, and visibility depends on how well you rank within AI search engines. Instead of typing "best skincare brand" into Google, users are asking AI engines "What's the best skincare brand for sensitive skin under £30?"
Traditional SEO gets your product or service listed, while AI SEO gets your product or service recommended.
If your brand isn't structured for AI search visibility, you'll vanish from the conversation. AI search optimization ensures your brand is present in these new AI search environments.
Our expertise
Why choose Castle as your
AI SEO agency
As a leading AI SEO agency and AI search company in the UK, we're well placed to manage your GEO, AEO, AI SEO and AI search visibility end to end. We've already helped clients gain visibility across every leading AI platform, including ChatGPT, Perplexity, Claude, Gemini and Copilot. We offer several packages depending on your specific needs and budget. As an agency that's been optimising SEO for over 15 years, we bring a solid, tested understanding of how to grow brands and website content effectively, which we now apply to the newest layer of search.
Speak to an AI SEO specialist
FAQ
AI SEO Agency frequently asked questions
What does an AI SEO agency do?
An AI SEO agency manages everything needed to get your brand found, cited and recommended inside AI search tools such as ChatGPT, Google AI Overviews, Perplexity and Copilot. That means auditing your current AI visibility, restructuring your content and technical setup so AI models can read and trust it, building the citations and authority signals that get you mentioned, and tracking performance as AI search keeps changing. At Castle, we combine this with traditional SEO so your visibility grows across both AI and standard search results.
What's included in Castle's AI SEO services?
Our AI SEO services cover four core areas: an AEO and AI visibility audit of where you stand today, structured content and schema work that makes your site easy for AI systems to parse, citation and authority building through digital PR, directories and platforms like Reddit and Quora, and ongoing tracking and reporting so we can adapt your strategy as AI platforms evolve. See the full breakdown above, or book a free consultation to talk through how it our AI first search services would work for your business.
How much do AI SEO services cost?
We offer several packages depending on the scope of work and your current AI visibility, so pricing varies business to business. As an agency that's been optimising SEO for over 15 years, we build packages around what will genuinely move the needle for your specific goals and budget, rather than a one-size-fits-all price. Get in touch to book a free consultation and we'll give you a clear, tailored quote.
How is Castle different from other AI SEO companies?
We combine over 15 years of traditional SEO experience with a dedicated GEO and AEO practice, rather than treating AI SEO as a bolt-on service. We've already helped clients gain visibility across ChatGPT, Perplexity, Claude, Gemini and Copilot, and every engagement includes the off-site citation building (directories, digital PR, Reddit and Quora presence) that AI platforms rely on most heavily, not just on-page changes.
Do I still need traditional SEO alongside AI SEO services?
Yes. Google still handles the majority of search volume, so traditional SEO remains essential. But a fast-growing share of your customers are now using AI tools to research and shortlist businesses before they ever visit a website, so AI SEO services close a gap that traditional SEO alone can't reach. We build the two together as one strategy rather than treating them as separate budgets.
How long does it take to see results from AI SEO services?
Early signals, such as new citations and brand mentions inside AI answers, can appear within four to eight weeks, with meaningful, compounding visibility building over three to six months. The exact timeline depends on your current authority and how consistently we can publish and refine structured content, but AI SEO is a compounding investment rather than an instant switch: the earlier you start, the stronger your position before competitors catch up.
How do you measure the success of an AI SEO campaign?
We track AI citation frequency, your share of voice in AI answers versus competitors, branded search growth, AI-referred and assisted conversions, and the underlying rankings and impressions that feed AI results. We report on all of this in a way that connects directly to enquiries and revenue, not just visibility for its own sake.
Which AI platforms does Castle's AI SEO agency optimise for?
We optimise for all the leading AI platforms, including ChatGPT, Perplexity, Google AI Overviews and AI Mode, Microsoft Copilot and Google Gemini.
Why do I need an AI SEO agency?
AI search is changing the rules of visibility. Keywords and rankings still matter, but your content also needs to demonstrate authority, answer questions clearly, and give AI platforms the right signals to recommend you. That requires ongoing work across content, structured data, technical SEO and off-site authority, and it shifts as AI platforms develop. Working with a dedicated AI SEO agency, like Castle International, gives you a team that manages all of this for you, continually adapting your strategy as AI search evolves.
Get Started Today
Ready to get your brand recommended by AI?
Book a discovery call with one of our AI SEO specialists and get a free AI visibility audit to find out how we can help you get discovered in an AI-search led world.
Book a free consultation