According to Andrej Karpathy (@karpathy), the shift from human-first to LLM-first and LLM-legible data formats represents a major trend in artificial intelligence. Karpathy highlights the potential of converting traditional materials, like textbook PDFs and EPUBs, into optimized formats for large language models (LLMs). This transformation enables more accurate and efficient AI-powered search, summarization, and tutoring applications, unlocking new business opportunities in digital education, personalized learning, and enterprise knowledge management. The move to LLM-first data structures aligns with the growing demand for scalable, AI-driven content processing and has significant implications for industries integrating generative AI solutions (Source: Andrej Karpathy, Twitter, August 28, 2025).