--- title: "AI crawlers get materially different HTML than browsers (geo/ai-content-differs)" description: "geo/ai-content-differs: Serving bots different text is either accidental (a UA-sniffing bot wall, a degraded variant) or cloaking; both mean AI answers are…" canonical: https://void-design.vercel.app/rules/geo/ai-content-differs lastModified: 2026-09-16 --- # AI crawlers get materially different HTML than browsers `geo/ai-content-differs` · severity **warn** · category AI search · detected by `void geo` and `void audit` ## Why it matters Serving bots different text is either accidental (a UA-sniffing bot wall, a degraded variant) or cloaking; both mean AI answers are built from content users don't see. ## How to fix it Serve the same main content to every user agent. Vary only the delivery (htmlLimitedBots streaming), never the facts. ## References - https://developers.google.com/search/docs/essentials/spam-policies#cloaking ## More ai search rules `void geo` reports 41 rules in this category. Generative-engine optimisation: whether AI crawlers that don't run JavaScript see the same content, valid and visible JSON-LD, an explicit AI robots policy, llms.txt, Markdown mirrors and answer-first writing. - `js-dependency` Main content only appears after JavaScript runs — [geo/js-dependency](https://void-design.vercel.app/rules/geo/js-dependency) - `hidden-streamed-content` Crawlers receive main content only inside hidden streaming containers — [geo/hidden-streamed-content](https://void-design.vercel.app/rules/geo/hidden-streamed-content) - `ai-bot-blocked` AI crawler user agents get 401/403/429/503 or a challenge page — [geo/ai-bot-blocked](https://void-design.vercel.app/rules/geo/ai-bot-blocked) - `jsonld-parse-error` JSON-LD block is not valid JSON — [geo/jsonld-parse-error](https://void-design.vercel.app/rules/geo/jsonld-parse-error) - `jsonld-unsafe` JSON-LD contains a literal