Taylor Lorenz – “I analyzed thousands of posts from the top newsletters to find out how much of Substack is AI. Some of the biggest “writers” on Substack aren’t writing at all. Lately it feels like I’m encountering more and more AI-generated content on Substack. This mirrors patterns across the broader web. Last fall, media outlets declared that over 50% of all articles online were AI generated. According to some pundits, that number could rise to 90% by the end of this year. As a human writer, I think a lot about the prospect of being drowned out by a deluge of AI generated slop, and I began to wonder how much top content on Substack is really just AI. Pangram is a tool that can detect AI generated text, even if it’s been “humanized“ or put through tools to evade AI detection. (They have a fantastic Chrome extension that allows anyone to check if the content they’re reading is AI.) I leveraged Pangram’s API to build a program that would analyze the 10 most recent posts from the top 25 Substack Bestsellers in every category, and reveal how much top content on Substack is AI generated…”

See also AI use across the North American book industry – “AI use across the North American book industry 2025 features the results of an industry survey where over 500 professionals were asked about artificial intelligence. The report shares insights into the adoption of AI, applications of the technology, perception of value, interest in training, areas of concern, and more. It also highlights the views of the two highest-represented sectors among survey respondents: publishers and libraries. The insights from this report will help organizations understand the current use of and attitudes towards AI and will help to create AI policies that are effective and aligned with industry values. This survey was developed by the Book Industry Study Group (BISG) AI working group in collaboration with BookNet Canada…”