Not All Needles Are Found: How Fact Distribution and Don't Make It Up Prompts Shape Retrieval, Reasoning, and Hallucination in Long-Context LLMs

Amirali Ebrahimzadeh, Seyyed M. Salili

The paper studies how the placement of facts in large text corpora and the use of anti‑hallucination prompts affect the ability of long‑context language models to retrieve informat…