Is AEO the Same as GEO?
AEO (Answer Engine Optimization) and GEO (Generative Engine Optimization) describe overlapping but not identical practices. GEO specifically targets generative engines — ChatGPT, Perplexity, Gemini, Claude — that synthesize answers with LLMs. AEO is the older, broader term that also covers non-generative answer surfaces like featured snippets and voice assistants. In 2026 usage, the two are near-synonyms, with GEO winning adoption.
Where the two terms come from
AEO predates the ChatGPT era. It emerged around 2016-2019 to describe optimizing for Google featured snippets, "People Also Ask" boxes, and voice assistants like Alexa and Siri — surfaces that extract one answer instead of listing ten links. GEO has a precise birthdate: the paper "GEO: Generative Engine Optimization" by Aggarwal et al., first posted in late 2023 and presented at KDD 2024, which coined the term and measured which tactics lift visibility in AI-generated answers.
What actually differs in practice
The day-to-day work overlaps by perhaps 80%: both demand answer-first writing, question-shaped headings, structured data, and extractable passages. The differences sit at the edges of scope.
| Dimension | AEO | GEO |
|---|---|---|
| Target surfaces | Featured snippets, PAA, voice assistants, AI answers | LLM-based engines only (ChatGPT, Perplexity, Gemini, Claude, Copilot) |
| Core mechanism | Answer extraction from ranked results | Retrieval-augmented generation (RAG) plus model training data |
| Key artifacts | Snippet-optimized paragraphs, FAQ schema | Citations, statistics, quotations, llms.txt, AI-crawler access |
| Measurement | SERP feature tracking | Prompt-based AI visibility tracking and citation share |
| Origin | Industry usage, ~2016-2019 | Aggarwal et al., KDD 2024 |
Which term should you use?
Follow your audience. Search behavior and vendor positioning have consolidated around GEO for LLM-era work, and the academic literature uses GEO exclusively. AEO remains the better label when your program genuinely includes featured snippets and voice — surfaces GEO's definition doesn't cover. What matters more than the label is that the deliverables target retrieval: the GEO paper found that adding citations, statistics, and quotations lifted generative visibility 30-40%, while classic keyword stuffing did nothing.
The pragmatic answer
Treat them as one discipline with two entry points. Define both terms once on your site — a glossary works well — then standardize internally on one. Splitting your strategy, team, or reporting between "AEO work" and "GEO work" creates artificial silos for what is a single content-and-technical practice.
Frequently asked questions
- Should I say AEO or GEO in client proposals?
- Use GEO when the scope is LLM-driven engines like ChatGPT, Perplexity, and Gemini. Use AEO if the engagement also covers featured snippets and voice assistants. Many agencies now write "GEO/AEO" once, then pick one term for the rest of the document.
- Is LLM SEO another name for the same thing?
- Mostly, yes. LLM SEO, AI SEO, and generative search optimization all describe optimizing for AI-generated answers. GEO is the term with academic backing, coming from the Aggarwal et al. paper presented at KDD 2024.
Keep exploring
See how AI engines talk about your brand — track mentions across ChatGPT, Perplexity, Claude, Gemini and 5 more. Start with Menra