AI Tech Publishing

Apr 29, 2026 · Artificial Intelligence

Why Do AI Agents Forget and Hallucinate? A Complete Guide to KV‑Cache Memory Mechanisms

The article explains that AI agents’ forgetting and hallucinations stem from token‑level attention scores causing key‑value cache eviction before retrieval, then surveys KV‑cache basics, naive growth, streaming‑LLM windowing, SnapKV’s attention‑guided compression, token‑retention studies, Memory Sparse Attention, compares these methods, and discusses practical system pitfalls and design implications.