{
  "id": 10589383,
  "title": "Routing Drift Alone Does Not Diagnose Failure in Merged MoE LLMs",
  "url": "https://urgent.news/2026/09/26/routing-drift-alone-does-not-diagnose-failure-in-merged-moe-llms",
  "topic": "ai",
  "section": "AI",
  "published": "2026-09-26T17:47:55.000Z",
  "source": {
    "name": "arXiv cs.AI",
    "slug": "arxiv-cs-ai",
    "url": "https://arxiv.org/abs/2609.32821v1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Model merging efficiently combines specialized large language models (LLMs) without joint retraining, but can substantially alter expert routing in Mixture-of-Experts (MoE) models. Such \\emph{routing drift} is often interpreted as routing failure, raising a fundamental question that remains unclear: \\emph{does routing drift after MoE merging actually indicate routing failure, and what evidence…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}