Large Language Model Optimisation (LLMO) Services in the UK
Speak the language of LLMs. Large Language Model Optimisation is the technical layer of AI visibility, the work that makes your content easy for ChatGPT, Claude, and Gemini to read and remember.
major AI crawlers don't execute JavaScript
Schema.org markup lifts AI citation odds
the emerging standard for AI crawler guidance
What is Large Language Model Optimisation (LLMO)?
Large Language Model Optimisation, or LLMO, is the technical practice of structuring your website, content, and data so that large language models (ChatGPT, Claude, Gemini, and others) can easily ingest, understand, retrieve, and reference your information.
If GEO is "get cited by AI when it generates answers" and AEO is "be the answer across all answer engines," LLMO is the underlying technical layer that makes both possible. Large Language Model Optimisation deals with how AI systems crawl your site, parse your content, identify your brand as an entity, decide what your pages are actually about, and retrieve specific facts when needed.
For most small businesses, LLMO sits underneath your AEO and GEO work. You don't need to talk about LLMO to your customers. But if it's not done, the rest of your AI visibility strategy is built on sand.
Who Should Choose Large Language Model Optimisation?
LLM Optimisation is not for everyone. It is a strong fit if any of these sound like you.
Businesses already investing in AEO or GEO. LLMO is the technical foundation underneath both. Without it, neither works properly.
JavaScript-heavy websites. If your site relies on JS to render content, AI crawlers may be skipping you entirely. LLMO fixes that.
Sites with weak or no schema markup. Schema is critical to AI understanding. LLMO builds it properly.
Brands with inconsistent online entities. If LinkedIn, Wikidata, your website, and your GBP all describe you differently, AI is confused. LLMO resolves that.
Technical teams who want to do AI right. LLMO is the part where engineering quality shows.
Our Large Language Model Optimisation Process at Growthcart
LLMO is the engineering layer of AI search.
- 1
llms.txt implementation
The emerging standard that tells AI crawlers what content is available and how to use it.
- 2
JS-free rendering
We make sure your content renders properly without JavaScript, because AI crawlers often don't run JS.
- 3
Comprehensive Schema.org markup
Organisation, Person, Service, Product, Article, FAQPage, LocalBusiness. Implemented, validated, monitored.
- 4
Wikidata and Knowledge Graph
Building accurate, consistent entries where appropriate.
- 5
Semantic content chunking
Long-form content restructured into AI-extractable 200-400 word sections.
- 6
Machine-readable formats
Markdown versions of key pages, clean RSS feeds, structured data layers.
- 7
Content density audit
Factual statements per paragraph, original data, citations, clear definitions.
- 8
AI bot monitoring
Watching GPTBot, ClaudeBot, PerplexityBot, Google-Extended traffic.
- 9
Robots.txt and access policy
Making sure your file actually allows the AI platforms you want visibility in.
Large Language Model Optimisation FAQs
Do I really need llms.txt for LLMO?
It's becoming a standard, and the cost of adding it is essentially zero. It tells AI crawlers what's on your site and what's safe to reference. Major AI platforms are starting to honour it. Adding it now puts you ahead of the vast majority of sites that haven't.
Should I block AI bots from crawling my site?
Depends on your goals. If you want to be cited in ChatGPT, Perplexity, or Google AI Overviews, you need to allow their bots. If you're worried about your content being used for training without attribution, there are nuanced options. We'll walk you through the trade-offs.
Will LLMO replace traditional SEO?
No. LLMO sits alongside traditional SEO. Traditional SEO still drives most of your direct traffic. LLMO and the wider AI visibility work add a new channel of visibility that's growing fast. You need both.
Is Large Language Model Optimisation just developer work?
Partly. Some of it is technical implementation (schema, llms.txt, rendering). Some is content and structure work. Some is entity and authority building across the web. We handle the technical layer in-house and coordinate with your developers where needed.
Related services
Most agencies are still optimising for yesterday's Google. We optimise for wherever your customers actually search now: Google, AI Overviews, ChatGPT, Perplexity, and everywhere in between.
Ready to get started with LLM Optimisation?
Want to know whether AI crawlers can actually read your site? Get a free LLMO technical scan.