Hubspot iconHubspotSep 30, 2026 ~7 min source read

How to use vector embeddings in AEO

A practical guide from HubSpot explaining what vector embeddings are, why they matter for answer engine optimization (AEO), and how marketers can change content and measurement to win AI-driven answers.

How to use vector embeddings in AEO

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Useful takeaways from this story.

Effective AEO requires writing self-contained, citable passages and maintaining consistent entity descriptions so embeddings map correctly.

Combine semantic and keyword signals: optimize wording and meaning to capture both lexical and semantic retrieval.

The useful part

Althea Storm THE STATE OF AEO IN 2026 Dive into data about how marketers around the world are adapting to AEO and learn how to implement AEO yourself. Access Now Updated: 09/30/26 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.

How it works

  • Franklin Rios, CEO of Next Net, used a simple analogy for large language models (LLMs) on the Found in AI podcast: "Vectorizing is embedding information into a data format.
  • The reason we use a data format [is] because it's the natural language of LLMs.
  • They consume mathematics, they consume data." This isn't engineering work you need to implement yourself.
  • The rest of this guide shows how passage-level retrieval, query fan-out, and AI visibility measurement translate into practical content decisions.
  • Vector Embeddings in AEO Vector embeddings represent the meaning of text as numbers so that retrieval systems can compare passages by semantic similarity rather than exact wording.

What to take from it

HubSpot's State of AEO in 2026 reports that 58% of marketers say their businesses are already optimizing content for answer engines. Vector Embeddings and AEO What are vector embeddings in AEO, and why do they matter? Dive into data about how marketers around the world are adapting to AEO and learn how to implement AEO yourself.

Example or evidence

  • The model converts a word, sentence, or passage into a vector — a list of numbers that lets a system compare that content with other vectors.
  • In a semantic-search system, passages with similar meanings can end up closer together even when they use different wording.
  • David Kirkdorffer, a fractional marketer, joined me on Found in AI and gave the best plain-English version of this I've heard: "LLMs do word math.
  • Change the words, and we change the meaning." He used a thesaurus to explain it.

Details worth keeping

How to use vector embeddings in AEO Home Marketing. Instead, it changes how you think about generative engine optimization. How to Use Vector Embeddings in AEO to Power Retrieval.

Related coverage

  • Kodekloud: An embedding is a list of numbers where similar meaning gives similar numbers. Run one locally with Ollama, compare two, and semantic search stops being a buzzword and becomes arithmetic you can read.
  • Marktechpost: Cohere has released Embed 5, a new embedding model family.
  • Hubspot: An AEO checker tells you whether the AI answers your buyers rely on actually mention your brand.
  • Marktechpost: Retrieval quality in an AI search product is bounded by two things: how good the embedding model is, and how cheaply you can run it across an index.

More context around this story.

How to optimize your website for AI search
Hubspot iconHubspotSep 9, 2026

How to optimize your website for AI search

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

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