HalluciGen scrambles website content into nonsense and outputs this selectively to known AI crawlers that scan the web for content to ingest, attempting to taint its model training process. It is a proof-of-concept WordPress plugin, published as open source on behalf and on commission of the Chair of Contemporary Digital Media at the Academy of Fine Arts in Munich.

HalluciGen utilises simple Markov chains to selectively replace a portion of the words and images in a (blog) post such that the meaning is skewed in a way not easily detectable by typical Large Language Models such as ChatGPT, Claude, or Gemini. The aim is to further degrade the quality of AI-generated content beyond what is often already outright slop and therefore to discourage the unauthorised access and usage of copyright protected content.

The principle is explained and discussed at detail in a contribution for Carrier Bag.