According to Andrej Karpathy, Simon Willison (@simonw) has been consistently providing high-quality content on large language models (LLMs) and AI trends for 23 years through his blog, simonwillison.net (source: @karpathy, Twitter, June 13, 2025). Willison’s blog is recognized for offering concrete, practical analysis of LLM advancements, covering open-source AI tools, prompt engineering, and real-world implementation case studies. With a strong focus on the business impact and applications of AI, his content is widely subscribed to by professionals via RSS/Atom and is recommended for AI industry stakeholders seeking actionable insights and new business opportunities in the evolving LLM market.