# TextReg: Mitigating Prompt Distributional Overfitting via Regularized Text-Space Optimization

> Source: <https://aiflash.com/news/131807/>
> Published: 2026-10-06 07:00:00+00:00

Large language models (LLMs) are highly sensitive to the prompts used to specify task objectives and behavioral constraints. Many recent prompt optimization methods iteratively rewrite prompts using LLM-generated feedback, but the resulting prompts often become longer, accumulate narrow sample-speci