GEO optimization: How to get cited in AI answers

Traditional SEO targets Google’s results — ten blue links on a page. In 2026 more people use AI tools to search: ChatGPT, Perplexity, Gemini, Copilot. These tools do not just list links — they answer questions and cite sources. If your content is not among those sources, you lose a new stream of traffic.

What is GEO?

Generative Engine Optimization (GEO) is the practice of optimizing content for AI-generated answers. Unlike classic SEO, which targets ranking algorithms, GEO targets how large language models (LLMs) select and cite sources.

Alongside GEO, AIO (AI Optimization) is used more often — a broader term that also covers adapting content for AI tools used to create, analyze, and distribute content.

How AI search tools pick sources

AI search products combine several signals:

1. Structure — clear headings, subheadings, lists, and tables are easier to parse
2. Factual accuracy — concrete numbers, dates, and citations beat vague claims
3. Topical depth — thorough coverage wins over shallow summaries
4. Technical signals — Schema markup (JSON-LD), llms.txt, clear URL structure
5. Freshness — updated content with publish and revision dates

Practical steps for GEO

1. Structure content for machine reading

Models extract information from text. The better organized it is, the more likely it is to be cited.

• Use H2/H3 headings for each topic
• Answer the question directly in the first sentence of a paragraph
• Add tables for comparisons and specifications
• Use numbered lists for steps and procedures

2. Implement llms.txt

The llms.txt file is a structured summary of your site aimed at AI tools. It works a bit like robots.txt, but instead of crawl rules it gives context about your business, services, and content.

Key elements of llms.txt:

• Company and service description
• Contact information
• Site structure with URLs
• FAQ with common questions
• Policy on AI bot access

3. Schema markup for AI context

JSON-LD structured data tells AI systems exactly what your content represents:

• FAQPage — for frequently asked questions
• LocalBusiness — for local services
• Service — for services with pricing where relevant
• HowTo — for instructions and procedures
• BreadcrumbList — for navigation structure

4. Write for answers, not keyword density

Classic SEO advice was “use keyword X N times.” For GEO the focus is answer quality:

• Open the paragraph with a clear answer to the question
• Add context and examples
• Close with a concrete takeaway or next step
• Avoid filler and generic phrasing

5. Build topical depth

Models favor sources that cover a topic thoroughly. One deep article on web security for small businesses beats ten thin posts.

Topic cluster strategy:

• One pillar page covering the whole theme
• Linked articles that go deeper on subtopics
• Internal links tying all related content together

Measuring success

Unlike classic SEO, GEO visibility is harder to measure:

• Manual checks — ask AI tools about your business and see whether your site is cited
• Referral traffic — watch inbound visits from domains such as chat.openai.com, perplexity.ai
• Brand mentions — use tools that track how your brand appears in AI answers
• Search Console — monitor impressions and clicks for informational queries

SEO and GEO are not rivals

GEO does not replace classic SEO — it extends it. A site that is well optimized for Google already has a head start on GEO: structured content, solid technical foundations, and authority.

The shift is in how you write: instead of writing mainly for ranking algorithms, you write clear, structured answers to the questions your prospects ask — whether in Google or in ChatGPT.

Conclusion

AI search is not the future only — it is already here. For small and medium businesses in Croatia, GEO is a chance to be cited as a source in AI answers, build authority, and capture traffic that traditional SEO alone may not reach.