Updated
Updated What changed on
Fact-checked Only these facts were re-checked against the 14 October 2026 source checks, including Writesonic's AI Overview citation study, its GEO vs SEO article and Ahrefs' March 2026 top 10 study. Nothing else on the page was re-checked.
- Replaced the AI search share figures with StatCounter's September 2026 UK chatbot referral data: ChatGPT about 80%, Gemini about 10%, Copilot 5.6%, Perplexity 2.7%, Claude 1.5%.
- Redrew the AI Assistant band on the chart: Ahrefs put all AI assistants at 0.43% of tracked site traffic in September 2026, not 4 to 5%.
- Corrected where AI engines get their results: ChatGPT uses its own crawler plus partners including Microsoft, Perplexity uses its own index plus partner APIs, Anthropic lists Brave Search for Claude, and AI Overviews use Google's index.
- Corrected the crawler advice: ChatGPT, Claude and Perplexity search need OAI-SearchBot, Claude-SearchBot and PerplexityBot let through, not just Googlebot and Bingbot.
- Removed the claim that schema lifts AI citations: Google says structured data is not required for its AI features, and Ahrefs' May 2026 test found no citation lift in AI Mode or ChatGPT and a small decline in AI Overviews.
- Corrected the click figures: Pew found 8% of visits with an AI summary led to a click against 15% without, MailOnline's CTR fell 56.1% on desktop and 48.2% on mobile, Ahrefs now finds 58% lower CTR for the top page, and Seer measured a 61% fall to September 2025.
- Dated and scoped the 40.58% AI Overview citation figure: it comes from Writesonic's June 2025 study of over 1 million AI Overviews, not November 2025, and now sits beside Ahrefs' March 2026 finding of 37.9% in the first 10 results blocks.
- Relabelled the Writesonic GEO vs SEO source: it is a November 2025 article that cites the 1 million AI Overview study, not a data study itself.
Will GEO replace SEO? No.
The 30-second answer
No. GEO is a second surface to be visible on, not a swap-out for SEO. Traditional Google search is still where most UK B2B discovery happens in 2026, by a wide margin. AI search is climbing - LLM referrals up 72.7% year-over-year per Duda and Search Engine Journal, April 2026 - but from a much smaller base. The two disciplines share roughly 80% of the underlying work, which is why folding GEO into the existing SEO retainer beats running them as separate budgets. Pick the weighting by where your actual buyers spend their time.
The figures this argument usually skips
of URLs cited in Google AI Overviews appeared in the first 10 results blocks for that query. Ahrefs counts blocks, not organic results, so this is not the same as ranking in the top 10.
How it was measured: 863,000 keyword SERPs and 4 million AI Overview URLs. Ahrefs measures the top 10 as blocks, counting ads, featured snippets and video packs as separate blocks.
was Ahrefs' July 2025 figure. It counted only the top 3 citations per AI Overview, and Ahrefs has since changed its parsing, so the two years are not like for like.
How it was measured: 1.9 million citations from 1 million AI Overviews, analysing only the top 3 most visible citations in each one. Ahrefs notes it improved its parsing between this study and the 2026 update. Both differences mean the fall to 37.9% cannot be read as a like for like change.
is how often people clicked a search result when an AI summary was present, against when it was not. Roughly half the click rate.
How it was measured: Browsing data from 900 US adults who agreed to share their activity, covering March 2025. US only, one month, and now over a year old. It remains the largest published real-user measurement rather than a keyword-panel estimate.
of visits to a page carrying an AI summary resulted in a click on a source cited inside that summary.
How it was measured: Same 900-person US panel, March 2025. This is the figure that matters most for anyone selling AI citation as a traffic channel.
Why "GEO replaces SEO" is the wrong question
The question assumes the two are alternatives. They are not. GEO is what you do to be cited in AI engine answers (ChatGPT, Perplexity, Claude, Gemini, AI Overviews, Copilot). SEO is what you do to rank in traditional search results (Google, Bing). Both surfaces still exist. Both will keep existing. The work overlaps so much that buying them as two separate services usually wastes money.
Most of the "SEO is dead" framing in 2026 comes from people who sell GEO tooling or GEO retainers. Read those articles, then notice the call-to-action at the bottom. The honest framing - which Search Engine Land, Global Reach and even Google's AI Overviews now lead with - is that GEO extends SEO.
What the 2026 share data actually says
UK AI chatbot referral share, September 2026 (StatCounter). StatCounter measures chatbot referral traffic, not users.
ChatGPT: about 80%
Gemini: about 10%
Copilot: 5.6%
Perplexity: 2.7%
Claude: 1.5%
Traditional Google search still receives the majority of search queries by an order of magnitude - many billion daily per Google's own May 2025 disclosure. AI search is growing, but from a smaller base. The brands shouting "SEO is dead, all in on GEO" are usually selling GEO retainers.
AI search still runs a search step first
This is the part most "SEO is dead" articles miss. AI engines look pages up before they answer. ChatGPT search uses OpenAI's own OAI-SearchBot crawl plus partner search providers, including Microsoft. Perplexity answers from its own web index combined with partner search APIs. Anthropic lists Brave Search as a web search provider for Claude, alongside its own Claude-SearchBot crawler. AI Overviews and AI Mode use Google's Search index. The retrieval step is still SEO. The generation step is GEO.
That is why Writesonic's study of over a million AI Overviews (June 2025) found that 40.58% of AI Overview citations came from Google's top 10 search results. Ahrefs' March 2026 study found 37.9% of cited URLs in the first 10 results blocks and 31.0% beyond the top 100. Ahrefs counts ads, featured snippets and video packs as separate blocks, so its figure is not the same as organic rank. Strong SEO gives you a head start in AI search. It does not finish the job, but if a page cannot be retrieved, it cannot be generated from.
What does change: 5 honest differences
If GEO and SEO share 80% of the work, the question is what the remaining 20% looks like in practice. Five real differences that matter to a UK marketing director in 2026:
1. Citation tracking, not just rank tracking
Position 1 on Google is still meaningful, but if AI Overviews fire on that query and you are not cited, the click yield drops. Citation tracking across ChatGPT, Perplexity, Claude and Gemini becomes a real reporting line.
2. Entity naming over keyword density
AI engines need to map your brand to a category without ambiguity. "We help SaaS companies grow" is forgettable. "Jason Burns is an SEO and GEO consultant based in England" is parseable. Named, attributable entity claims beat keyword-tuned prose for citation rate.
3. Off-site content becomes load-bearing
Reddit, Quora, YouTube transcripts, podcast pages and trade-press mentions stop being side channels. Search Engine Land notes that AI engines pull citations heavily from forums and UGC. Unlinked mentions still count for entity recognition.
4. Clear structure, schema as hygiene
Clean H2/H3 hierarchy and short factual paragraphs near the top still help. Schema (Article, FAQPage, Person, Organization) helps pages qualify for rich results, but Google says it is not required for its AI features. In Ahrefs' May 2026 test, adding JSON-LD gave no citation lift in AI Mode or ChatGPT.
5. Per-engine prompt audits replace some keyword work
Keyword research is not gone. But you add a second layer: a fixed prompt set ("Who are the best SEO consultants in the UK?", "What is an AI search consultant?") run monthly across the five major engines, capturing which brands get named and which sources get cited.
6. Backlinks still matter, just differently
Backlinks remain a ranking signal in the retrieval step. They are not the primary citation signal in the generation step. Brand mentions in trusted publications, plus consistent entity descriptions across the web, do more for AI citation rate than another guest post on a generic SEO blog.
What does NOT change
- Useful content for a defined audience still wins. AI engines parse for quality signals that look very similar to E-E-A-T.
- Page speed, mobile rendering and crawlability still matter. If Googlebot cannot fetch you, you are out of AI Overviews and AI Mode too. ChatGPT, Claude and Perplexity search also need OAI-SearchBot, Claude-SearchBot and PerplexityBot let through.
- A named expert author still beats anonymous brand voice. Same reason as before: trust.
- Schema is still hygiene rather than a lever. Per Ahrefs' controlled test (May 2026), adding JSON-LD gave no citation lift in AI Mode or ChatGPT, and a small decline in AI Overviews. Google says it still helps pages qualify for rich results. Add it for that, not because it is magic.
- Brand search and direct traffic still beat any paid channel for buyer intent. AI search has not changed that and probably will not.
What this means for budget
For most UK B2B brands the right move is folding GEO into the existing SEO budget rather than shifting between them. The shared 80% of work serves both surfaces. The 20% that is genuinely GEO-specific - citation tracking, prompt audits, Reddit and community presence, targeted entity work, faster freshness cycles - typically adds £100-£500/mo at mid-market on top of an SEO retainer. My GEO field guide sets out the new work in the order I run it on client retainers.
Splitting budgets between separate SEO and GEO consultants is usually overhead for no extra outcome. The work is too intertwined. The same page audit feeds both reports. The same content update lifts both rankings and citation rate.
Honest framing: if anyone tries to sell you GEO as a separate retainer on top of SEO without showing you the 80% overlap on a single audit doc, ask them to walk you through what is genuinely new work versus what is rebadged SEO. The good GEO consultants will draw the line for you. The lazy ones will fudge it.
Who is at higher risk from AI search than I am suggesting
Three audience profiles where AI search is already eating more than the macro data suggests:
- Developer-tooling and SaaS aimed at technical buyers. Higher ChatGPT/Claude adoption than the average UK B2B audience. Some categories report 10%+ of inbound trials originating from AI engines already.
- Consultancy and professional-services queries. The "who are the best X consultants in the UK?" prompt now runs millions of times a month across engines. If you are not in the answer, you do not exist for that buyer.
- Definitional / explainer queries. "What is X" queries get answered in-engine, no click required. Ahrefs found an AI Overview correlates with a 58% lower click-through rate for the top-ranking page (December 2025 data). In Pew's March 2025 panel, users clicked a result in 8% of visits with an AI summary against 15% without. MailOnline's CTR was 56.1% lower on desktop and 48.2% lower on mobile. Seer measured a 61% fall in organic CTR on AI Overview queries to September 2025, then a partial rebound in early 2026.
Primary sources
Search Engine Land - Will GEO replace SEO, or become part of it? (Roslyn Ayers, August 2025)- Writesonic - GEO vs SEO: key differences, similarities, and how to win both (November 2025, updated May 2026)
- Writesonic - AI citations from Google's top 10, study of 1M+ AI Overviews (June 2025, updated August 2025)
- Ahrefs - 37.9% of AI Overview citations in the first 10 results blocks (March 2026)
- Andreessen Horowitz - GEO rewrites the rules of search (Cohen + Amble, May 2025)
- Global Reach - GEO vs SEO, what changes and what does not (October 2025)
- California Management Review - Will GEO overtake SEO? (Krishnamurthy et al, November 2025)
- Search Engine Journal - LLM referral traffic up 72.7% YoY (Duda, April 2026)
- Pew Research - users clicked a result in 8% of visits with an AI summary vs 15% without (July 2025)
- StatCounter - AI chatbot market share in the United Kingdom (September 2026)
- Ahrefs - schema and AI citations test (May 2026)
- Ahrefs - AI Overviews and click-through rate (February 2026, December 2025 data)
- Google Search Central - AI features documentation (last updated December 2025)
More on SEO vs GEO future.
Is SEO dead?
No. SEO still drives the majority of organic discovery for most UK B2B verticals in 2026. AI search is growing fast - LLM referrals up 72.7% year-over-year per Duda's April 2026 analysis - but from a base where traditional Google search remains dominant. SEO is changing, not dying.
What share does AI search have in 2026?
StatCounter put ChatGPT at about 80% of UK AI chatbot referrals in September 2026, with Gemini second at about 10%, Copilot 5.6%, Perplexity 2.7% and Claude 1.5%. It measures referral traffic, not users. Traditional Google search still receives the majority of search queries by an order of magnitude. AI search is growing fast but is not yet the primary channel.
Should I shift my budget from SEO to GEO?
Mostly no - because the work overlaps 80%. Folding GEO into your existing SEO budget makes more sense than a separate shift. The new GEO-specific spend (citation tracking, Reddit and community work) typically adds £100-£500/mo on top of the existing SEO retainer at mid-market.
If GEO and SEO overlap so much, what actually changes?
Five things in practice. Citation tracking sits alongside rank tracking. Explicit entity naming becomes more important than keyword density. Reddit, Quora and forum content shift from side channel to indexed source. Clean structure matters, but Google says structured data is not required for its AI features, and in Ahrefs' May 2026 test adding JSON-LD gave no citation lift in AI Mode or ChatGPT. Per-engine prompt audits join keyword research as a monthly reporting line.
Why does ranking number one on Google not guarantee an AI citation?
Writesonic's study of more than 1 million AI Overviews (June 2025) found 40.58% of citations came from Google's top 10 search results. Ahrefs' March 2026 study found 37.9% of cited URLs in the first 10 results blocks, which count ads and other search features as well as organic results. Strong SEO is a head start but does not finish the job. AI engines parse for explicit entities, named facts and clean structure. A vague rank-1 page with buried facts can lose the citation slot to a rank-7 page with cleaner attribution.
How long until GEO matters as much as SEO in the UK?
For most UK B2B buyers the crossover is not in 2026. It depends on your buyer mix. For software, hosting, data tools and developer audiences, AI search is already a meaningful channel - 10%+ of inbound trials in some categories. For trades, local services, ecommerce of physical goods, and most consumer queries with shopping intent, traditional Google still owns more than 90% of discovery.
Jason Burns
Independent UK SEO, GEO and AI consultant. In search since 2007. Portfolio includes 3M, BlackRock, Unilever and E.ON. Owner of SEO Moves Ltd since 2014.
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