Search is moving from ten blue links to a single AI answer. These are working notes on answer engine optimization (AEO) — how ChatGPT, Perplexity, and Gemini decide which brands to recommend, and how to become one of them.
We asked ChatGPT, Claude, Gemini, Perplexity and Grok which AI customer support tool to use, 75 times. Intercom Fin was named in 47 of 75 answers. Chatbot questions and agent questions had different winners, and ChatGPT answered chatbot questions with OpenAI's own tools.
We asked ChatGPT, Claude, Gemini, Perplexity and Grok which AI customer support platform to use, 75 times. Chatbase was named in 20 of 30 answers about chatbots and 8 of 45 about AI agents, where Intercom Fin led. ChatGPT never named it, and pointed to OpenAI's own tools instead.
We asked ChatGPT, Claude, Gemini, Perplexity and Grok what to build an app with, 75 times. 51 answers named the same four products. Here is the stack each engine would build you, layer by layer, and where they disagree.
We asked ChatGPT, Claude, Gemini, Perplexity and Grok which email API to use for signup and password reset emails, 60 times. Resend was named in 92% of answers, ChatGPT was the exception, and the most cited source was one email vendor's blog.
Our blog sat invisible in Google for months with every post stuck at "Discovered — currently not indexed." The cause wasn't content quality or crawl budget — it was broken internal links severing the crawl paths. Here's how to diagnose it in 60 seconds, and why the same failure hides you from AI crawlers too.
We ran 10 buying questions through ChatGPT, Claude, Gemini, Perplexity, and Grok — 3 times each, 150 grounded answers — and counted every brand they named. Every category had a locked shortlist, well-known challengers flickered, and 11 real brands were never named once.
Across 150 grounded AI answers, we logged every source the engines cited. The pattern is clear: AI recommendations run downstream of review sites, listicles, and niche blogs — not your own homepage. Here are the domains that get cited most.
AEO is the practice of getting your brand recommended inside AI answers from ChatGPT, Perplexity, Gemini, and other answer engines. Here's what it is, how it differs from SEO, and how to start.
SEO earns a ranking, AEO earns a citation, and GEO is another name for the same thing. Here's a plain-English breakdown of how the three overlap, where they diverge, and which to invest in.
A practical, step-by-step guide to getting ChatGPT to recommend and cite your brand — how it retrieves and chooses sources, the content that gets quoted, and how to measure whether it's working.
Compare openllmrank, Profound, Athena HQ, and Ahrefs Brand Radar by published pricing, engine coverage, measurement methods, and evidence. Updated September 2026.