{
  "id": 7698717,
  "title": "Where Should a Document Live: Context, Representations, or Parameters?",
  "url": "https://urgent.news/2026/09/15/where-should-a-document-live-context-representations-or-parameters",
  "topic": "ai",
  "section": "AI",
  "published": "2026-09-15T15:47:02.000Z",
  "source": {
    "name": "arXiv cs.AI",
    "slug": "arxiv-cs-ai",
    "url": "https://arxiv.org/abs/2609.17346v1"
  },
  "original_language": "en",
  "account": null,
  "summary": "To answer questions outside of their pre-training data, large language models (LLMs) need access to new information, which can be presented in the context window as documents, encoded into the model's parameters, or injected as latent representations. However, each of these methods comes with different efficiency, cost, and performance trade-offs, with no single winner. We present a controlled…",
  "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."
}