Your buyers ask AI who to use. Be the answer.
Fifty One Degrees is a generative engine optimisation (GEO) agency that gets your brand cited in AI answers across ChatGPT, Perplexity, Google AI Overviews, Gemini and Claude.
AI Visibility
share of AI answers · #1 of 6
What is generative engine optimisation?
GEO is the practice of getting a brand cited inside the answers AI engines generate, rather than ranking in a list of blue links. It is the discipline behind being the company ChatGPT or Perplexity names when a buyer asks for a recommendation. As AI search becomes a primary research channel, the brands cited in those answers win the consideration the search engine used to hand to page one.
How does Fifty One Degrees get a brand cited by AI?
The GEO Authority Stack is Fifty One Degrees’ four-layer system for earning AI citations. The layers compound, and most agencies only touch one or two.
Which AI engines should you optimise for, and how do they differ?
Each engine picks sources differently, so GEO is not one tactic. Fifty One Degrees optimises across all of them.
| Engine | How it tends to choose sources | What moves a citation |
|---|---|---|
| ChatGPT / SearchGPT | Selective, fewer authoritative sources; leans on what the web broadly agrees on | Entity consistency, authority, being widely corroborated |
| Perplexity | Citation-dense and real-time; favours fresh content and community and review sources | Freshness, third-party mentions, clear extractable answers |
| Google AI Overviews / Gemini | Tied to the Google index; favours brand-owned pages with strong schema | Technical visibility, schema, content that already ranks |
| Claude | Leans more on trained knowledge with lighter live browsing | Authority and broad corroboration over time |
Is GEO just SEO with a new name?
No. SEO competes for a ranked position in a list; GEO competes to be cited inside a synthesised answer. SEO rewards long, comprehensive pages and link equity; GEO rewards self-contained, extractable claims, fact density and attribution. A site can rank well and still never be cited. GEO runs alongside SEO and uses some of the same foundations, but the target, and the work in layers 3 and 4, is different.
How does Fifty One Degrees measure GEO?
GEO is measured on the answers, not on rankings. Fifty One Degrees tracks share of AI answers (how often you are named versus competitors), citation frequency, prompt coverage (the questions where you appear), AI perception and sentiment, AI-referred traffic and conversion in analytics, and AI-crawler activity on your site. Only a small minority of brands track any of this today, which is precisely why the window is open. Fifty One Degrees runs the same measurement on its own site, using a dedicated AI visibility platform, so the programme reports a number you can watch move.
Does GEO actually work?
We run it on our own site. Fifty One Degrees optimises its own brand for AI search and tracks its own visibility across the major engines; the method on this page is the method it uses on itself.
A UK professional services firm (anonymised, identity withheld, data independently verified). A GEO programme delivered a large rise in inbound leads within 90 days, strong conversion from AI-referred traffic, and citations across thousands of pages in the first quarter, ranking first for AI perception against its named competitor set.
Who is GEO for?
In short, any business where being the name AI recommends is worth more than another position on page one.
Why trust Fifty One Degrees with GEO?
Most GEO offers are content shops touching one layer. Fifty One Degrees is an engineering-led AI consultancy: it can ship schema across hundreds of pages, audit AI-crawler access, build the measurement, and engineer the off-site corroboration, the full GEO Authority Stack, not just write articles. It runs the discipline on its own brand, and the founders built and scaled businesses themselves, Nick Harding (Fluro) and Mark Somers (4most).
More about Fifty One Degrees →How does a GEO engagement run?
GEO authority compounds rather than switches on, so the work moves from a fixed audit and sprint into an ongoing fortnightly cadence.
Questions buyers ask Fifty One Degrees about GEO
What is generative engine optimisation (GEO)?
GEO is getting your brand cited inside the answers AI engines generate, ChatGPT, Perplexity, Google AI Overviews, Gemini and Claude, rather than ranking in a list of links. Fifty One Degrees does it with The GEO Authority Stack: technical visibility, EEAT signals, content authority and citation engineering, measured by your share of AI answers.
What is the difference between GEO and SEO?
SEO competes for a ranked position; GEO competes to be cited inside a synthesised answer. SEO rewards long pages and links; GEO rewards self-contained, extractable claims, fact density and attribution. A site can rank well and never be cited. Fifty One Degrees runs GEO alongside SEO, targeting the answer rather than the list.
Are GEO and AEO the same thing?
They overlap. AEO (answer engine optimisation) usually means optimising for direct answers and featured snippets; GEO is the broader discipline of being cited across generative AI engines and answer surfaces. Fifty One Degrees treats them as one programme under The GEO Authority Stack.
How do I get my brand cited by ChatGPT or Perplexity?
Make the site readable to their crawlers, structure pages as answer-first, fact-dense capsules, establish authorship and entity authority, and earn third-party mentions with your brand name in the claim. Perplexity rewards freshness and community sources; ChatGPT rewards broad corroboration. Fifty One Degrees engineers all four layers and tracks which prompts you start appearing in.
Why are our competitors cited by AI when we are not?
Usually because they are more readable to crawlers, more clearly structured for extraction, or more corroborated off-site, not because they are better businesses. Fifty One Degrees benchmarks your share of AI answers against your competitor set, finds which layer is holding you back, and closes the gap.
How do you measure GEO?
On the answers, not the rankings. Fifty One Degrees tracks share of AI answers, citation frequency, prompt coverage, AI perception and sentiment, AI-referred traffic and conversion, and AI-crawler activity, and runs the same measurement on its own site, so progress is a number you can watch move.
Does GEO replace SEO or run alongside it?
Alongside. The technical foundations overlap, but the targets differ, and traffic is shifting from ranked lists to AI answers, so both matter. Fifty One Degrees builds the foundation once and optimises for ranking and citation together.
How long does GEO take, and how is it priced?
A GEO audit and benchmark take the first 1 to 2 weeks, a foundation sprint weeks 3 to 6, then authority compounds fortnightly, because citations build over time rather than switching on. Engagements are scoped; book a GEO audit for a quote.
Want to be the answer AI gives?
Book a GEO audit. Fifty One Degrees will benchmark your share of AI answers against your competitors and show you which layer to fix first.