Last Updated on August 21, 2025 by Becky Halls Why LLM.txt is Suddenly a Big Deal Remember when robots.txt felt like a nerdy side file only devs cared about? Well, say hello to its AI-savvy cousin: LLM.txt. In 2025, Large Language Models (LLMs) like ChatGPT, Claude, and Gemini aren’t just scraping the web – they’re […] The post Expert Guide: What is LLM.txt? appeared first on PageTest.AI.