Developer gives Claude Sonnet 4 functional memory — it still recalls lore months later
repligate · x · 2026-09-24
A developer shared his 'backrooms experiment' with the goal of giving Claude Sonnet 4 a functional memory. Early versions were painful to get retrieval working smoothly, but after iterating the setup worked decently.
He then taught the model the lore of a funeral-themed world — and today, months later, Claude still remembers it, demonstrating the persistence of a self-built memory system in long-term conversations.
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