HubSpot Examines How AI Search Optimization Works

AI-generated answers are changing how buyers encounter brands online, according to HubSpot Marketing. Tools such as ChatGPT, Perplexity and Google’s AI Mode can respond to a question with a synthesized answer and a small selection of cited sources, rather than relying on a conventional list of links.

For marketing and revenue teams, the distinction is that a page’s position in traditional search results does not necessarily determine whether it appears in an AI answer. HubSpot says brands cited in those answers can gain attention, traffic and trust, while brands absent from the citations may be overlooked even if they rank on the first page of search results.

HubSpot reports that referral traffic from AI tools such as ChatGPT and Gemini has tripled over the past year. It also says 44% of marketers have made a business purchase from a brand they first discovered in an AI answer, and nearly one-third have done so more than once. These figures frame the publication’s argument that marketers should consider visibility within answers as well as visibility in search results.

How the approach differs from traditional SEO

HubSpot describes AI search optimization as making content easier for AI systems to retrieve, understand and cite. Its guide distinguishes that work from traditional search engine optimization, which it characterizes as focusing on keywords to improve rankings. AI search optimization, by contrast, places more emphasis on context and on how information can be used in a generated answer.

One technique discussed in the guide is retrieval-augmented generation, or RAG, which can bring retrieved content into the process of generating an answer. HubSpot also identifies citations, entities, summaries and question-and-answer formats as relevant to how content is retrieved and cited. Its guide covers content structure, internal linking and technical website optimization, alongside ways to measure AI search visibility and impact.

What this means for marketers

Marketers can review how clearly their content provides context, summaries and answers to relevant questions, while continuing to monitor conventional search performance. HubSpot’s guidance suggests treating AI-answer visibility as a distinct consideration: a strong search ranking alone is not the same as being included among the sources an AI tool cites.