01
We read your website the way an AI does
We check the words, page titles and hidden labels that AI Assistants look at when they read your site — just like ChatGPT, Gemini and Perplexity do.
Does AI recommend your business?
Get your free AI Visibility score in 30 seconds to unlock a clear, plain-English list of exactly what to fix so they recommend you.
- ChatGPT
- Gemini
- Claude
- Perplexity
- Copilot
- Grok
Trusted by the brands we work with
How it works
Three steps, nothing to set up. Type in your website address and we do the rest.
02
We score you out of 100
Four plain scores: can AI find you, understand you, trust you, and recommend you? Each is marked 0 to 100, so you know exactly where you stand.
03
You get a clear list of what to fix
The full report lists every problem in plain English, with the exact change to make, how long it takes, and the words your site is missing.
Who we are
An AI SEO agency built on people
Castle is an AI SEO company that is leading the charge for businesses making themselves visible on AI Chatbots such as Gemini, Claude, ChatGPT and Perplexity.
With the most advanced SEO technology, world-class content creators, a highly experienced web development department that specialises in on-site and off-site SEO, Castle is ensuring more of its clients are being recommended on every major chatbot.
With a combined 150+ years of marketing experience. Clients shouldn't feel like they've hired a faceless agency; they should have access to the people actually building and improving their marketing.
Why it matters
People ask AI now. Make sure it recommends you.
Being on page one of Google matters less every year. What matters is whether an AI Assistant can name your business when someone asks it who to use.
Be the name it says first
Get named instead of your competitor
When someone asks an AI Assistant to recommend a business like yours, it names two or three. We tell you whether you're one of them — and what the businesses being named are doing differently.
A to-do list, not a lecture
Know exactly what to change
No jargon and no guesswork. You get a short list of changes to your website, written in plain English, ordered by the ones that will help you most.
Turn hidden searches into enquiries
Win customers you never knew you missed
Lots of buyers decide who to contact before they ever visit your website. If the AI describes you well, you get the call. If it doesn't, you never hear about it.
Most fixes take days, not months
Get there before everyone else
Most websites were built for Google, not for AI. Fixing yours now is quick and cheap. Catching up later, once AI already favours someone else, isn't.
What you get
The free score is written for you: plain English, no jargon, so you know where you stand. The full report is written for whoever makes the changes: a complete technical audit with the code to paste in. It's ideal for handing to your website management company to implement — or Castle can optimise your business for AI visibility for you.
- Free: a plain-English score out of 100 and the single biggest thing holding you back
- Paid: a weighted score across all six pillars of AI visibility, with the evidence behind each one
- Live AI engine testing — we ask ChatGPT and Gemini real buyer questions and show you their answers
- Your share of model: how often AI names you, and which competitors it names instead
- A directory & citation audit — Google Business Profile, Bing, Apple, Trustpilot, Yell, Companies House and more
- Structured data, content and authority audits with ready-to-paste code and where each fix goes
- Full A-Z tactical AI SEO and 4-engine visibility plan with importance indicators
Sample report$99 one-off
Discoverability78
Content Clarity52
Machine Readability34
Authority Signals61
12 findings and fixes unlock after purchase
Pricing
One report. One price. No subscription.
Less than an hour of a consultant's time — for a clear list of changes you can start today.
Free score
£0
Your score out of 100 in plain English, across four simple areas, plus the biggest thing holding you back. No jargon, no account, no card.
Scan my siteFull report
$99
one-off- Everything in the free score, plus the full six-pillar technical breakdown
- Live AI engine testing across ChatGPT and Gemini, with your share of model
- A directory & citation audit and a name/address/phone consistency check
- The raw evidence we collected from your page, listed in black and white
- Findings with the technical cause, ready-to-paste code and how to verify each one
- A suggested build order, prioritised by impact
You only pay after you've seen your score.
Questions
- What is AI visibility?
- It's how easily an AI Assistant like ChatGPT can find your business, work out what you sell, and describe you properly when someone asks it for a recommendation. It's similar to Google SEO, but AI rewards clear, plain facts rather than keywords.
- Is the free score real?
- Yes. The free score measures where your business is listed and referenced across the places AI checks — maps, review platforms, directories and official records — because that's what decides whether AI is willing to recommend you. Paying doesn't change your score; it unlocks the full six-pillar audit and the list of fixes.
- What's in the full report?
- It's a full technical audit scored across six weighted pillars: technical crawlability (15%), structured data and entity clarity (15%), content extractability and FAQ visibility (20%), directory and citation presence (20%), live AI engine testing (20%) and authority signals (10%). You get every signal we pulled off your page, the answers real AI Assistants gave to buyer questions about your industry, a directory audit, and findings with ready-to-paste code, where each goes and how to verify it worked.
- What is live AI engine testing?
- We ask AI Assistants like ChatGPT and Gemini the questions your buyers actually type — things like 'best plumber in Leeds' — and record whether they name you, mention you in passing, or leave you out entirely. You see the answers and which competitors got named instead.
- How do I get it?
- It's emailed to you straight away, and it stays available at your own private report link.
- Why pay $99 when the score is free?
- The free score is the plain-English version: where you stand and the biggest thing holding you back. The $99 report is the technical detail — the six-pillar breakdown, the live AI test results, the exact causes, the code to fix them and the order to do it in. An agency audit like this usually costs hundreds and takes weeks.
- Do I need a developer?
- The free score needs nobody — it's written for you, not for a developer. The full report is written so a developer or your web person can work straight from it, and many of the fixes are still wording and settings you can change yourself.
- My site is already good on Google — do I still need this?
- Yes, often. Ranking well on Google and being recommended by AI are two different things. Plenty of sites that do well on Google are described badly, or not at all, by AI.
Start today
Your competitors are already being recommended. Find out if you are.
One website address, thirty seconds, a free score. Then a $99 report that tells you exactly what to fix so AI starts recommending you.
Get my free AI visibility scoreNo account, no card, no sales call.