Marketers aren’t waiting to see how the AI search shift plays out — they’re already funding it. In a 2025 survey of 600 marketing professionals, 78% of companies said they’re now funding Generative Engine Optimization (GEO) programs, nearly matching the 77.5% still funding SEO and PPC, and nearly nine times more companies plan to increase their GEO focus over the next year than plan to cut it (Clutch). The reason is simple math: ChatGPT alone now serves more than 900 million weekly active users (TechCrunch), and a growing share of them are asking it the exact questions that used to send traffic your way from Google.

If your brand isn’t showing up when ChatGPT answers those questions, you’re losing visibility in a channel that’s growing faster than any other — and one where there’s no ad auction to buy your way back in. That’s what GEO is for.

What Is Generative Engine Optimization (GEO)?

Generative Engine Optimization (GEO) is the practice of optimizing your brand’s content, structure, and online presence so that generative AI tools — ChatGPT, Gemini, Claude, and Perplexity — are more likely to surface, cite, and accurately represent your brand when answering user questions.

GEO is closely related to Answer Engine Optimization (AEO), and the two terms are often used interchangeably. If there’s a distinction, it’s one of scope: AEO tends to focus narrowly on getting cited as the direct answer to a specific question, while GEO covers the wider practice of shaping how your brand is described and recommended across generative AI tools overall — visibility and framing, not just citations. In practice, most brands need to build both muscles at once, and we cover the AEO side of that in our companion guide to Answer Engine Optimization.

One important note on terminology: GEO for AI visibility is a different concept from “using ChatGPT for SEO” (i.e., using the tool to help write SEO content or do keyword research). This guide is about the former — getting your brand found and cited inside ChatGPT itself.

GEO vs. SEO: What’s the Difference?

The two aren’t competing strategies. Strong SEO fundamentals — crawlability, backlinks, topical authority — are still what get your content into an AI model’s retrieval pool in the first place. GEO is what determines whether, once it’s in that pool, the model actually chooses to cite you.

Why GEO Matters Right Now

• GEO spending has caught up to SEO. 78% of surveyed companies now fund GEO, essentially on par with the 77.5% funding SEO/PPC, and 63% plan to increase GEO budget over the next 12 months (Clutch).
• The audience is enormous and growing. ChatGPT has more than 900 million weekly active users as of early 2026, roughly double what it had a year earlier (TechCrunch).
• Most of these interactions never turn into a website visit. ChatGPT Search resolves an estimated 82% of queries without the user clicking through to any source at all (DEV Community). If you’re not the brand named in that unclicked answer, the opportunity disappears entirely — there’s no second-page result to fall back on.
• Businesses themselves are naming the shift. As Forbes put it, companies are moving budget “from SEO to GEO” as AI use accelerates (Forbes).

How ChatGPT Actually Chooses What to Cite

This is the part most GEO advice glosses over, and it matters a lot for where you spend effort:

ChatGPT operates in two distinct modes. In its default mode, it answers from training data with no live web access and produces no citations at all — there’s nothing to optimize for here. In browsing mode, it searches the web (via Bing) and selects roughly 3 to 6 sources to cite per response.

Within browsing mode, research on citation behavior points to three weighted factors that determine whether a page gets selected: domain authority (~40%), content quality (~35%), and platform trust signals (~25%) (Pro AI Search). Domain authority is largely a gatekeeper — it determines whether your page even enters the initial retrieval pool ChatGPT considers. Once a page clears that bar, pages across a wide authority range show comparable citation rates, meaning content quality and structure do most of the remaining work.

Core Components of a GEO Strategy for ChatGPT

1. Write extractable, direct-answer passages. Open each section with the answer in the first sentence, and keep paragraphs short (2–3 sentences) so a model can lift a clean, self-contained passage.
2. Build the domain authority that gets you into the retrieval pool. Backlinks and topical authority aren’t obsolete for GEO — they’re the entry ticket.
3. Establish presence on platforms ChatGPT already trusts. Being referenced on forums, review sites, and other authoritative third-party platforms reinforces the “platform trust” signal models weigh.
4. Make sure you’re indexed where ChatGPT actually looks. Since browsing mode retrieves through Bing, submitting your sitemap to Bing Webmaster Tools (not just Google Search Console) is a frequently overlooked step.
5. Keep content fresh. Answer engines favor recently updated, dated content when a query calls for current information.

How to Measure GEO Success

Standard rank tracking won’t tell you if GEO is working, since there’s often no ranked position or click to measure. Track instead:

• Brand mention frequency across ChatGPT, Gemini, Claude, and Perplexity for your core topics and product categories
• Citation/link inclusion rate — how often you’re not just named, but linked as a source
• Share of voice against named competitors on the same prompts
• Sentiment and accuracy of how your brand is described when it does appear

Get Started with GEO

GEO budgets are growing fast, but most companies still haven’t built a deliberate strategy around it — they’re spending without a clear read on whether it’s working. That gap is the opportunity.

If you want to know exactly how often ChatGPT (and Gemini, Claude, and Perplexity) surfaces your brand today, and a concrete plan to increase it, WebPulse’s GEO services start with a full AI visibility audit and build out the authority, structure, and third-party signals needed to earn the citation.