{"type": "article", "title": "No Universal Signal Predicts Sample-Level LLM Regression under Version Updates", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/no-universal-signal-predicts-sample-level-llm-regression-under-version-updates", "original_source": "https://arxiv.org/abs/2608.13607", "published": "2026-08-17T04:00:00+00:00", "accessed": "2026-08-17", "id": "no-universal-signal-predicts-sample-level-llm-regression-under-version-updates"}