ResearchResearch paperLarge Language Models · Efficiency & Inference1 source · Oct 16, 2026

MARS: Memory-Aware Routing for Session-Level LLM Assistants

We introduce MARS, a memory-aware routing framework that uses session state as a shared control interface between memory construction and model selection.

Key points

  • Long-term LLM assistants must repeatedly decide what prior context to expose and which model should answer as an interaction evolves.
  • A Query and Topic Manager (QTM) estimates compact decision-relevant state that guides a fixed state-conditioned memory policy and an online router, enabling each turn to receive an appropriate memory view and a suitable model under a quality-memory-cost trade-off.
  • We evaluate MARS on RealMem and MultiChallenge with 16 system configurations each, covering long-history memory-driven interaction and bounded sessions with structured context interference.
  • Together, these results support a favorable quality-memory-cost trade-off for long-history, memory-dependent interaction.

Sources (1)

  • [1]MARS: Memory-Aware Routing for Session-Level LLM Assistants
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 16, 03:04 PM
    We introduce MARS, a memory-aware routing framework that uses session state as a shared control interface between memory construction and model selection.
    Long-term LLM assistants must repeatedly decide what prior context to expose and which model should answer as an interaction evolves.

Extractive summary: sentences quoted from the sources.

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