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Mem0 vs Zep vs Letta: Picking an AI Agent Memory Platform in 2026

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

Every multi-turn agent runs into the same wall: the model has no memory between calls. You either replay the whole conversation into the context window every time, which gets expensive fast, or you summarize and truncate and quietly lose the one fact that mattered. That gap is why agent memory beca…

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  1. 2026-08-26 03:58 · DEV Community — AI
    Mem0 vs Zep vs Letta: Picking an AI Agent Memory Platform in 2026

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