{
  "id": 3647625,
  "title": "Prefix Sliding for efficient test-time scaling",
  "url": "https://urgent.news/2026/08/26/prefix-sliding-for-efficient-test-time-scaling",
  "topic": "ai",
  "section": "AI",
  "published": "2026-08-26T17:37:15.000Z",
  "source": {
    "name": "arXiv cs.AI",
    "slug": "arxiv-cs-ai",
    "url": "https://arxiv.org/abs/2608.26070v1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Test-time scaling uses extra test-time compute to improve performance, such as letting language models reason longer when solving a problem. As models keep the entire reasoning trace in memory via full attention, hard tasks that need long thinking can be prohibitively expensive. However, we find most intermediate reasoning tokens lose importance as the model continues reasoning. This calls into…",
  "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."
}