LLMO vs GEO vs AEO – a plain guide to AI answers and SEO

What LLMO means: getting your business into AI answers

LLMO stands for Large Language Model Optimization. It is the work of making your services and products show up – accurately – when people ask generative AI tools such as ChatGPT, Gemini, Claude or Perplexity for advice.

Classic search gave people a list of links to compare. AI tools give them an answer. Someone asks "Which dentists near Shibuya have parking?" or "Who prints custom packaging in small runs?" and often acts on the summary without visiting ten sites. Whether your name appears in that summary is becoming a real point of contact with customers.

AI tools build answers mostly from public information on the web. Many now also search live and read current pages. That means the quality and consistency of what your own site and other sites say about you flows straight into those answers.

• Ask an AI tool about your brand name – is the description correct?
• Ask for "your service + your area" – are you among the suggestions?
• Check for outdated addresses or discontinued services in the answers

Running these three quick tests already shows you where you stand.

LLMO vs GEO vs AEO vs AIO: what each term covers

The overlap comes from different communities naming the same trend. The goal is largely shared; the names differ by which AI or search feature they focus on.

• LLMO: optimization for large language models – being picked up in answers from generative AI in general. The most common term in Japan
• AIO: used for "AI Optimization", and in Japan often for Google's AI Overviews. Check the context, because the meaning shifts
• GEO: Generative Engine Optimization – optimizing for AI-driven search engines. Widely used outside Japan and practically the same as LLMO
• AEO: Answer Engine Optimization – an older term for systems that return a direct answer, such as voice assistants and featured snippets

So LLMO vs GEO is mostly a question of vocabulary. If Google search is your main concern, start with AIO optimization; if you want to cover generative AI broadly, see LLMO optimization.

SEO vs GEO: the shared foundation and what changes

Many owners wonder whether GEO replaces SEO. In practice GEO and LLMO build on top of SEO. The pages AI tools draw on are usually pages that search engines index properly and that explain things clearly. Google itself states that no special markup is needed to appear in AI Overviews and that the usual SEO fundamentals apply.

• Shared: proper indexing, accurate and expert content, a clearly identified and trustworthy publisher
• SEO focus: ranking in search results and earning the click
• GEO / LLMO focus: being named in the answer, cited as a source and described correctly
• AEO focus: content structured so one question gets one short, precise answer

Because the goal shifts, so does measurement. More and more questions are settled inside the AI answer with no click at all. Alongside rankings and traffic, it makes sense to track whether you appear in AI answers and whether inquiries that mention your brand by name are growing.

A practical LLMO checklist you can start today

Most first steps are about making your information accurate and easy to read – for people and machines alike. Work through these in order:

• Consistent business details: the same name, address, phone and hours on your site, Google Business Profile and directories
• One page per service: what you offer, for whom, roughly at what price and in which area
• Answer-first copy: turn real customer questions into headings and answer in the first one or two sentences
• Show who is behind it: founder profile, qualifications, founding year, last-updated dates
• Structured data: organization, local business and FAQ markup that search engines can read
• Technical health: check indexing in Search Console and make sure nothing blocks crawlers you want
• Mentions elsewhere: industry associations, partners and local media that reference you

You may have heard of llms.txt, a proposed file that summarizes a site for AI. How far major AI services actually use it is still unclear, so treat it as optional and get the basics above right first. Our guide to AI search optimization goes deeper into each step.

How to check how AI sees your business

Record your starting point before you change anything, so you can compare later. You do not need special tools for a first picture:

• Ask ChatGPT, Gemini and Perplexity five to ten questions your customers would ask, and note the answers and sources
• Search your main keywords on Google and see whether you or competitors appear in AI Overviews
• In GA4, look for referral visits from AI services such as chatgpt.com or perplexity.ai
• If an answer is wrong, find the outdated page or third-party listing it probably came from

Keep in mind that AI answers vary with wording, timing and the user. Check the same questions regularly and judge the trend. No method can guarantee that an AI will show your business or say something specific; steady, accurate information is what makes you easy to pick up.

How UNANOBO handles LLMO and GEO: an AI visibility check plus a free demo

Send us your current site address and we check how major AI tools and Google's AI Overviews present your business today. Then we build a free demo page structured to be clear for both AI and people. You open it on your computer and phone and decide whether to go ahead once you like the direction.

The process is simple: free demo, feedback, launch, growth. The founder handles every project personally, so you keep one contact from the first check to improvements after launch – including SEO, MEO and GA4 setup. Everything runs by message, in Japanese or English.