Cross-session memory is what makes an assistant feel personal, and it is mostly a retrieval and state-management problem rather than a bigger context window. The signal is the tiered architecture plus what to store, forget, and protect.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Cross-session memory is what makes an assistant feel personal, and it is mostly a retrieval and state-management problem rather than a bigger context window. The signal is the tiered architecture plus what to store, forget, and protect.
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