Mem0

Mem0 gives AI apps a long-term memory. Instead of starting fresh each session, an assistant can recall a user's preferences, past choices and facts from earlier chats, which makes replies more personal and less repetitive. It extracts important details from conversations, stores them and retrieves the relevant ones when needed. You can use the open-source library or the hosted platform through a simple API. Mem0 has a free tier and paid plans for larger usage. It is useful for companions, support bots and agents that should get better the longer someone uses them.