Google topples the SEO business in ChatGPT with technical data

Published on May 19, 2026 | Translated from Spanish

Google has published a guide that dismantles the business model of agencies selling services to rank in ChatGPT. The company describes much of that market as unsustainable, and details two key mechanisms: RAG and query fan-out. Let's see how response generation actually works in current models.

cinematic technical illustration showing a glowing search engine interface collapsing onto a fragmented SEO agency office, while a transparent RAG retrieval pipeline feeds real-time data into a ChatGPT icon, query fan-out arrows splitting into multiple broken dollar signs, server racks in background with blinking red warning lights, photorealistic engineering visualization, dramatic overhead lighting, digital debris floating in air, shattered glass effect on outdated SEO charts, hyper-detailed circuit board textures, cool blue and orange contrast lighting, ultra-sharp industrial aesthetic

RAG and query fan-out: how AI-powered search engines work 🔍

RAG (retrieval-augmented generation) retrieves real web pages from Google's index before generating a response, meaning the content must be indexed and relevant. Query fan-out launches multiple related queries in parallel to obtain more sources. This means there is no magic ranking trick; visibility depends on quality and organic indexing.

Spoiler: ChatGPT ranking courses don't work 💸

So, if you paid for a course that promised to place your website at the top of ChatGPT's responses, bad news: the star method was praying that Google would index your page. Agencies sell smoke, and Google just turned on the fan. Next time someone offers you an SEO pack for ChatGPT, remember: the only thing growing fast is their bank account.