Blog
Notes on search, AI answers and the code behind them.
Practical guides on how search engines and AI assistants find, read and cite websites. Written by the Serpel team, with sources for every claim.
Featured · AI search
Generative engine optimization (GEO): what it is and what works
Generative engine optimization (GEO) is how you get cited in AI answers. See what the research found, what Google says and a checklist you can use.
9 min read
AI search
AI crawlers: which to allow, which to block, and how to do it
A practical list of AI crawlers: what GPTBot, ClaudeBot and others do, which to allow or block, plus robots.txt examples you can copy and test.
7 min read
AI search
AI SEO: how to use AI for SEO work and how to optimise for AI search
AI SEO means using AI to do SEO work and optimising for AI search. What to automate, where AI fails, what Google allows and which tool types exist.
9 min read
AI search
Answer engine optimization (AEO): what it is and how to do it
Answer engine optimization (AEO) means writing content AI answers can cite: how engines pick sources, which page patterns help and how to measure.
8 min read
AI search
Best AI visibility tools in 2026: what they track and what they cost
The best AI visibility tools compared: what Semrush, Ahrefs, Peec AI, Otterly.AI, Profound and Serpel track, their public pricing and how to choose.
7 min read
![Serpel illustration: a Google results page where yoursite.com ranks first next to a ChatGPT answer that cites yoursite.com as source [1]](/_next/image?url=%2Fblog%2Fgeo-vs-seo%2Fcover.webp&w=3840&q=75&dpl=dpl_A8Yrx3HgrRKLEUwABZbHqjC67Vfm)
AI search
GEO vs SEO: what is different, what stays the same and how to measure it
GEO vs SEO: SEO earns rankings and clicks, GEO earns citations in AI answers. See the differences, what stays the same and how to measure both.
9 min read
AI search
SEO for ChatGPT: how to rank in ChatGPT search and get cited
SEO for ChatGPT means letting OAI-SearchBot in and being quotable. How ChatGPT search picks sources, what to do and how to check citations.
8 min read
AI search
LLM SEO: how to get found and cited by AI assistants
LLM SEO makes your site easy for ChatGPT, Claude and Gemini to find and cite. Training data vs live retrieval, crawler access, llms.txt and how to measure.
10 min read
AI search
llms.txt example: 3 complete files for docs, shops and blogs
Three complete llms.txt examples for a SaaS docs site, an online shop and a blog, plus the format rules, llms-full.txt and a validation script.
11 min read