Encyclopedia Britannica and Merriam-Webster are suing OpenAI over nearly 100,000 online articles they say were scraped for training. The complaint also points to verbatim reproductions, retrieval systems that substitute for publisher pages, and fabricated answers attributed to the institutions. A dictionary and an encyclopedia are defending their names at the moment when language software uses names as shortcuts for authority.

The dispute places a strange object in court: knowledge that has been copied, compressed, and returned without its original address. Britannica’s articles were written to answer questions under editorial responsibility. ChatGPT can deliver a fluent answer while depriving the page of the visit that supports its staff, archives, and future revisions. When the answer is wrong, the institution may still be blamed because its name has been attached to the invention. The lawsuit asks who owns the words, but it also asks who remains visible when a machine has learned to sound informed. A definition can be reproduced in a second. The institution that maintains it takes years to build, and the browser window may never show where the sentence began.