Cross-session memory is what makes an assistant feel personal, and it is mostly a retrieval and state-management problem, not a bigger context window. The signal is the tiered architecture plus what to store, forget, and protect.
Updated Aug 2026 · Grounded in real Applied AI Engineer 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, not a bigger context window. The signal is the tiered architecture plus what to store, forget, and protect.
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