Most AI chats forget everything when the conversation ends. Systems with persistent memory store selected information, such as preferences, recurring formats, project context, and corrections, and bring it back when it is relevant to a new request.
Memory makes an assistant feel like a colleague who knows the business, but it raises design questions. What should be remembered, who can see it, how long it is kept, and how users can correct or remove it all need clear answers. In business settings, memory should be scoped to the right organization and person.