LANTERN: Layered Archival and Temporal Episodic Retrieval Network for Long-Context LLM Conversations

In three linesLANTERN is a lightweight memory layer that archives every conversation turn and restores relevant details after compaction via hybrid retrieval, requiring zero LLM calls and adding <25ms latency per turn. On 94 multi-turn conversations (1,894 validated facts), LANTERN-Rerank recovers 78.3% of lost facts, significantly outperforming MemGPT (72.4%, p<0.0001) at a fraction of inference cost.

Summary generated by Claude — human-verified