Generative Engine Optimisation (GEO) is the practice of shaping your website and digital footprint so AI tools — ChatGPT, Perplexity, Claude, Google’s AI Overviews — cite your firm when prospective clients ask them a question. For professional services firms, it is now the most important visibility channel after direct referral.
When a business owner asks ChatGPT “who is the best commercial property solicitor in Manchester?” or “which IFA should I use in Cheshire?” the answer arrives in seconds. The firms named in that answer win the instruction. The ones that aren’t mentioned might as well not exist.
This playbook explains what GEO actually is, why professional services firms are uniquely well placed to win at it, and the eight moves you can make in the next 90 days to start earning citations.
What is GEO, and how is it different from SEO?
SEO optimises your website to rank in a list of blue links on Google. GEO optimises your website to be picked up, synthesised and cited inside an AI-generated answer. They are complementary, not competing — but the mechanics are meaningfully different.
Three practical differences matter for professional services firms.
First, AI models do not rank — they select. They choose a handful of sources, synthesise them, and cite the ones they used. Being page two of Google still gets you occasional traffic. Being “not cited” in ChatGPT gets you nothing.
Second, AI models reward structure and clarity over keyword density. Short paragraphs, direct answers, headings phrased as questions, verifiable statistics with named sources — these are what gets extracted and quoted.
Third, AI models draw on the whole web, not just your website. Mentions on Wikipedia, LinkedIn, YouTube, industry directories and press coverage all feed the model’s picture of your firm.
Why professional services firms have the advantage
Much of the content in AI training data is generic marketing copy. Professional services firms — especially boutiques — can publish content with actual regulatory depth, actual case references, actual partner expertise. That quality signal is precisely what AI models are designed to reward.
You don’t need the budget of a national law firm to win here. You need consistency, clear structure, and topical authority in your niche.
The 8 GEO moves for professional services in 2026
1. Implement the right schema markup
At minimum: Organization or ProfessionalService schema on the homepage; Service schema on each service page; FAQPage schema on any page with visible Q&A; Person schema for partners and senior advisers. Use the most specific subtype available — LegalService, AccountingService, MedicalBusiness — rather than the generic LocalBusiness.
2. Add a TLDR-style opening to every page
The first 200 words should directly answer the page’s core question. AI tools that use real-time retrieval give disproportionate weight to opening content. Write a one-paragraph definition or summary before any preamble.
3. Structure headings as questions
Instead of “Our Approach”, use “How does our firm handle contentious probate?” When someone asks that exact question in ChatGPT, your heading aligns with the prompt, and the paragraph below has a far higher chance of being extracted.
4. Include verifiable data with named sources
Professional services content wins citations when it’s grounded. Reference legislation, case law, FCA handbook sections, regulatory bodies, independent research. AI models prioritise content that can be checked — a study from Princeton found that adding citations and statistics improves AI visibility by 30-40% compared to unoptimised content.
5. Publish an llms.txt file
A plain text file at yourdomain.com/llms.txt gives AI crawlers a structured summary of your most important pages. Adoption is uneven, but the file is cheap to create and future-proof. Size Creative’s own site has one live; we’d recommend every professional services site follow suit.
6. Build brand mentions off your own site
LinkedIn thought leadership, guest articles in your sector press, speaking at conferences with published transcripts, listings on respected directories, being quoted in trade publications. Each one is a breadcrumb for AI models to find and trust your firm. Around 48% of AI citations come from community and user-generated platforms — not the firm’s own website.
7. Keep content fresh
Recent analysis by Wellows found content updated within the last 30 days receives roughly 3.2 times more AI citations than older material. Set a monthly schedule to refresh your top 10 pages with updated data, new FAQs and added internal links.
8. Measure citation share, not just traffic
Tools like Profound, OptimizeGEO and Ahrefs Brand Radar track whether your firm is mentioned in AI answers. Monthly, run 20 prompts a prospective client would actually ask and log the outcomes.
What this looks like over 90 days
Month 1: technical foundations — schema, llms.txt, sitemap review, heading restructure on top pages. Month 2: content — rewrite 5 existing service pages in answer-first structure, publish 3 new pillar articles. Month 3: authority — LinkedIn thought leadership, directory submissions, 1-2 guest placements in sector press. GEO compounds; firms that start in April 2026 will be cited by late summer.
FAQs
Is GEO replacing SEO?
No. GEO is an additional layer. Strong traditional SEO remains the foundation — AI models use search results as one of their retrieval sources. But ranking on Google alone is no longer enough to win visibility in 2026.
How quickly does GEO show results?
Some firms report citations within 30-60 days. Most see meaningful movement at 3-6 months, with compounding authority from 6-12 months of consistent publishing.
Do I need to rewrite my whole website?
No. Start with your homepage, your top 5 service pages, and your most-visited blog posts. The technical fixes (schema, llms.txt, headings) are site-wide but low-cost.
The one-sentence takeaway
GEO is SEO’s answer-engine counterpart, and professional services firms — with real expertise, regulatory depth and niche authority — are uniquely well placed to win at it if they commit to structure, freshness and consistent publishing.
Next step
If you’d like us to run a 20-minute audit on how your firm is currently represented in AI answers, book a call. We’ll run your top 20 client prompts through ChatGPT, Perplexity and Google AI Overviews and show you exactly where the gaps are.
