The memory trust gap: agents trust stale memories 92-100% of the time at every scale
Future_AGI · reddit · 2026-09-14
A detailed Reddit writeup surveys research on agent memory failures: models over-trust stale stored facts. A paper testing Qwen3 (0.6B-8B) found models trust outdated values 92-100% of the time at every scale. Another paper testing five major memory systems (Graphiti, Zep, mem0, langmem, cognee) found none enforces revocation by default. Reflexion-style agents with memory solved tasks worse than without, memorizing their own mistakes.
Mitigation patterns emerging: separating storage from a query-conditioned memory view, promotion gates requiring human/second-check confirmation of writes, and provenance tracking with sources and timestamps. On security, the MINJA attack plants records via normal queries at >95% success; a scan-before-write validator (0.016ms per call) fully blocked it.
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