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GEO

Technical notes on product development, SEO and visibility inside AI answer engines. Written in Geneva.

Swiss-style geometric illustration: thin black lines, isolated red blocks suggesting a sort between allowed and blocked AI crawlers.

GEO September 10, 2026 8 min read

GPTBot, ClaudeBot, PerplexityBot: Block or Allow?

GPTBot protects training, OAI-SearchBot feeds ChatGPT answers: mixing them up loses visibility without gaining protection. Here is how to decide, crawler by crawler, with a working robots.txt configuration.

Geometric composition evoking a structured text file at the root of a website, signal red line on light paper background, Swiss style.

GEO September 9, 2026 8 min read

llms.txt: a practical guide and its real limits in 2026

A well made llms.txt takes an hour to write. Here is how to structure one, a real example, and the 2026 data that honestly shows what it changes and what it does not.

Geometric composition evoking passage extraction by an answer engine, red signal rule on a light paper background.

GEO September 8, 2026 8 min readFeatured

GEO: getting cited by ChatGPT, Perplexity and AI Overviews

A share of searches no longer ends in a click. Here is how answer engines pick their sources, the six levers worth pulling, and how to measure progress without paid tooling.