Core Viewpoint - The article discusses the ongoing competition in the AI industry regarding the development of long-term memory systems, highlighting different approaches taken by companies to enhance user experience and product differentiation in the AI landscape [1]. Group 1: From "Behavior Data" to "AI Memory" - Current AI products, such as assistants and virtual companions, primarily operate on a one-time interaction basis, which diminishes user trust and engagement [4]. - Long-term memory should be a core design element from the outset, rather than an afterthought, as emphasized by Artem Rodichev from Ex-human [4]. - Effective memory systems must balance the retention of significant events, updates based on user interactions, and user control over memory management [4]. - The true challenge in product differentiation lies not in replicating features but in how products learn and adapt through memory [4]. - Mainstream personal assistant systems categorize memory into short-term, mid-term, and long-term layers, enhancing understanding of user behavior over time [4]. - The interconnectedness of these memory layers creates a "behavioral compounding" effect, making it difficult for competitors to replicate this contextual depth [4]. - Companies are making strategic choices regarding what to remember, for whom, and for how long, aiming to establish a competitive edge through unique memory systems [4]. Group 2: Routes to Achieve AI's "Lifetime Memory" - Various product routes have emerged around AI long-term memory, each emphasizing different strategic narratives such as privacy, cost efficiency, speed, and integration [5].