Your AI has no memory. Here's How to Add One with Node.js and Mem0

Every chat interface you've ever used feels like the AI remembers you. It doesn't. There's no memory, no session, no awareness of previous conversations. What you're seeing is your application feeding the entire conversation history back into every request. The model just processes whatever is in front of it and forgets everything the moment it responds. That approach works, but it has real ceilings. The message array grows with every exchange, so longer conversations mean larger payloads and higher token costs. You'll hit context window limits eventually. And across sessions, everything is lost start a new conversation, and the user has to repeat themselves from scratch. There's also no intelligence to it: a throwaway message like "ok thanks" carries the same weight as "I'm building a fintech app in Node.js, and I hate ORMs." What you actually want is a system that extracts the facts that matter, stores them, and retrieves only the relevant ones when needed without stuffing the entire