Taranjeet Singh (pictured above, right) has launched six companies, with some failing and others seeing varying degrees of success. His seventh, Mem0 , could be his defining one. The startup starts with the premise that large language models can’t remember past interactions the way humans do. If two people are chatting and the connection drops, they can resume the conversation. AI models, by contrast, forget everything and start from scratch. Mem0 fixes that. Singh calls it a “memory passport,”