Most businesses optimizing for AI are thinking about one assistant: ChatGPT. But your customers are scattered across ChatGPT, Claude, Gemini, Perplexity, and Google’s AI Overviews — and each one answers from a different mix of sources. Winning citations across all the major LLMs (large language models) is how you capture every AI-driven customer, not just some of them. Here is how LLM SEO services in Vancouver, WA make that happen.

I’m Chris Cartmill. I’ve spent 15+ years in SEO and generated over $13M in online sales for businesses I’ve worked with. Here is the cross-platform playbook.

Why one AI assistant is not enough

Different customers prefer different assistants: professionals lean toward Claude, Android users get Gemini by default, researchers love Perplexity, and ChatGPT remains the giant. If you only optimize for one, you are invisible to the rest. Worse, each model has its own quirks — what gets you cited by ChatGPT might not move the needle with Claude. A cross-LLM strategy covers the whole field.

How the major LLMs differ

ChatGPT blends training data with live browsing and tends to reward clear, authoritative web content and strong brand mentions. Claude is famously careful and detail-oriented — it favors precise, well-structured information and is stingy with recommendations, so earning a Claude citation signals real authority. Gemini leans heavily on Google’s ecosystem: your Google Business Profile, reviews, and Google-indexed content carry enormous weight. Perplexity cites its sources openly, which makes it the easiest to audit and a great diagnostic tool. Google AI Overviews pull from top-ranking search results, so classic SEO strength feeds them directly.

What cross-platform LLM SEO services include

It starts with a multi-model visibility audit: running the same buying-intent questions through ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews, and mapping exactly where your business appears and where it does not. Then the foundation: consistent business information everywhere, a fully optimized Google Business Profile, and a systematic review engine. Next, citation-ready content on your site — service pages and FAQs written in the clear, factual style every model quotes. Then platform-specific tuning: strengthening Google-ecosystem signals for Gemini, depth and precision for Claude, browsable authority content for ChatGPT. Finally, monthly monitoring across all platforms, because each model updates on its own schedule.

The common foundation every model rewards

Despite their differences, all LLMs reward the same core assets: an unambiguous business identity, genuinely helpful content that answers real questions, third-party proof like reviews and local mentions, and technically sound, crawlable pages with schema markup. Get the foundation right and you will rise on every platform at once — the platform-specific work is the final 20%.

How to check your own cross-LLM visibility today

Ask each assistant the same question — “Who is the best [your trade] in Vancouver, WA?” — and compare. You will often find you appear on one platform and vanish on others. Those gaps are your opportunity: each one represents customers your competitors are capturing unopposed.

Why Vancouver businesses hire Chris Cartmill

I’ve been doing SEO for 15+ years and have generated $13M+ in online sales for my clients. I track how every major AI platform treats local businesses, and I do the work myself — no juniors, no handoffs. You get one expert who understands the whole board. Learn more at chrismcartmill.com.

Get cited everywhere your customers ask

Want to know where your business stands across ChatGPT, Claude, Gemini, and Google AI Overviews? Call or text 360-608-2359 for a cross-platform visibility check. I’ll show you the gaps and the fastest path to filling them. You can also reach me through chrismcartmill.com.

For a detailed breakdown of geo seo vancouver wa services, costs, and FAQs, see my complete guide.

Also read

• SEO Vancouver WA: The Complete Guide to Ranking Your Local Business in 2026
• GEO SEO Expert Vancouver WA: How to Get Your Business Cited by AI Search
• GEO SEO Specialist Vancouver WA: What to Look for Before You Hire One
• GEO SEO Consultant Vancouver WA: A Practical Guide for Local Businesses
• GEO SEO Services Vancouver WA: What’s Included and What It Costs
• SEO Consultant Vancouver WA: How to Choose the Right One for Your Business
• Local SEO Vancouver Washington: The 2026 Playbook for Small Businesses
• ChatGPT SEO Services Vancouver WA: Get Your Business Recommended by AI
• Answer Engine Optimization Services Vancouver WA: Show Up When AI Answers
• How To Do Your Own GEO SEO: The $19 Guide That Gets Your Business Cited by AI Search
• GEO SEO PDF Guide Vancouver WA: Rank Higher in ChatGPT, Claude, and Gemini
• DIY GEO SEO for Local Businesses: The Complete $19 Playbook

Ready to get your business cited by AI search? buy geo seo services here. Prefer to do it yourself? Get the $19 DIY GEO SEO PDF — or learn more at chrismcartmill.com.