HubSpot(HUBS)

If you’ve been asked to diagnose and fix AEO gaps, the first step is to conduct an audit. For most brands, an AEO gap is any reason an AI answer engine can’t (or won’t) use its page as a source.

AI search optimization tools help marketers understand where a brand appears in AI-generated answers, which sources earn citations, and what to improve next. They complement traditional SEO tools rather than replace them: SEO measures rankings, clicks, and organic traffic, while AI-search tooling adds visibility signals such as mentions, citations, sentiment, and answer accuracy.

A vector embedding is a numerical representation created by an embedding model. The model converts text into a list of numbers that can be compared with other vectors, helping a retrieval system find passages with similar meaning even when they use different words. Semantic retrieval is one tool AI systems can use to find source material; modern retrieval can also combine semantic search with keyword search and other relevance signals.

An AEO checker tells you whether the AI answers your buyers rely on actually mention your brand. People increasingly ask ChatGPT, Perplexity, and Gemini a question and act on the reply without clicking a link, so visibility that once showed up in your rankings can vanish into an answer you never see.

In 2025, most of the major answer engines made an almost identical update. Claude, ChatGPT, Gemini, and many others started to show what they were thinking.

  Few phenomena within the creator economy have moved as fast as AI’s embrace. What was once treated with anxious suspicion is now more widely viewed as a necessary strategy.

Most email marketing teams know the basics. Authenticate your domain. Clean your list. Write a compelling subject line—test before you send.

Something big just shifted in how people find answers online. More buyers are skipping the investigation and deliberation of clicking through blue links on Google, in favor of asking ChatGPT, Perplexity, and the like for one direct answer.

Learning how to optimize your website for AI search is one of the hottest skills for marketers right now, because the audience for these tools is growing fast. Monthly unique visitors to the major answer engines climbed from 634 million in Q1 2025 to 904 million in Q1 2026, up more than 40% in a year, according to Wix Studio .

How much does AEO cost? The short answer is roughly $30 a month for a monitoring tool you run yourself to over $15,000 a month for a full-service agency program that handles everything for you — with a wide middle in between.

Over the past few months, I noticed a pattern while researching for clients. When I searched Perplexity for B2B reports or insights that I could cite for a project, the source list would look like this: Gartner, McKinsey, peer-reviewed paper, then … John Smith on LinkedIn?