GEO vs SEO: what actually changes for your brand The honest comparison.

What stays the same

Strip away the hype and the foundations do not move. Most AI assistants either search the web live or draw on a search index when they answer commercial questions, which means the entry ticket is still classic SEO: pages Google can crawl, a site structure that makes sense, content people genuinely want, and other sites willing to vouch for you.

This is why “SEO is dead” takes should be ignored. ChatGPT, Perplexity, Copilot and Google’s AI Overviews all retrieve from the same web your rankings are built on. GEO sits on top of SEO, not instead of it, and every pound spent on crawlability, content and authority still earns its keep. If you want the definition first, our plain-English guide to generative engine optimisation covers what GEO is and where AI answers come from.

The five things that actually change

What changes is not the foundations but the finish line, and the page shapes that cross it. Five shifts matter in practice:

• The win condition: a position in a list of links becomes a citation inside one synthesised answer, and there are only three or four of those.
• Content shape: comprehensive guides still rank, but question-shaped headings with a self-contained 40 to 60 word answer underneath are what models lift verbatim.
• Authority signals: backlinks still count, but entity clarity, one canonical name, consistent details and third-party corroboration, decides who gets quoted when sources agree.
• Technical checks: robots.txt now has two audiences, and blocking GPTBot, PerplexityBot or ClaudeBot removes you from the pool entirely. Key content hidden behind client-side rendering is invisible to most assistants.
• Measurement: rankings and Search Console tell you nothing about citations. You need a monthly prompt log, assistant referral traffic and AI crawler hits instead.

Where the budget should go first

It depends on stage, and the honest answer is rarely “both, separately”:

• Early growth (£250k to £1M turnover): fix the SEO foundations first. Crawl access, site structure, a handful of genuinely useful pages and basic Organization schema. Most AI visibility at this stage is a by-product of doing the basics well.
• Scaling (£1M to £5M): add the GEO layer on top. Answer-first content around the questions buyers ask, FAQ and Article schema, named authors, published prices, and a monthly prompt log so you can see citations moving.
• Category leader (£5M+): systematic entity work and digital PR into the third-party sources assistants already quote, plus prompt tracking across every engine, not just Google. At this level you are defending share of answer, not chasing first citations.

The pattern to notice: nothing in the GEO rows is a separate team, tool or contract. It is the same subscription with a wider definition of done, which is exactly how our SEO & AI Visibility plans are structured.

The work that pays off twice

Some jobs compound across both channels, and these are the ones to prioritise whatever your stage. A single, consistent brand entity with real sameAs links helps Google’s knowledge graph and every assistant that reads it. Named authors with real bios earn trust from algorithms and answer engines alike. Published prices, honest comparisons and FAQ blocks written from real sales questions give both systems something concrete to surface.

The tactical checklist for all of this is in how to get cited by ChatGPT, Gemini and Perplexity, and the measurement side is in how to measure your brand’s AI search visibility. Between the three guides you have the whole picture.

What it costs in the UK

A competent UK SEO engagement runs £1,000 to £5,000 a month depending on scope. GEO should add nothing on top when it is scoped properly, because the deliverables are the same pages, the same schema and the same authority work, held to a higher standard. Anyone quoting GEO as a separate retainer on top of your SEO is selling the same work twice.

Our SEO & AI Visibility subscription starts at £1,250 a month plus VAT with fixed deliverable volumes at each tier, and monthly AI answer tracking included as standard. The three tiers sit side by side on the SEO packages page, the citation-specific scope is on the AI SEO page, and if you want email and paid media run on the same engine, the Growth Bundles price it as one fixed monthly number.

Questions we get asked

Written by

Sam, co-founder, growth and paid media

Runs growth and paid media at Mesmerise Marketing. Ten years of paid and organic campaigns for challenger brands across DTC, B2B services and hospitality.

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