Comment by fenomas

> Large number of upvotes on the quoted comment however.

Sure, and also downvotes - that measures factionalism, not correctness.

But tech wise, you're confused. Functionally speaking chatgpt is a shared document editor - the server needs to store chat histories for the same reason Google Docs stores the content of documents. Users can submit text to chatgpt.com from one browser, and later edit that text from the app or a different browser. Ergo the text is stored on the server, simple as that.