What we learn building an AI detector, and what it means for your writing.https://semgram.com/https://semgram.com/blog/the-marks-hidden-in-a-text/https://semgram.com/blog/the-marks-hidden-in-a-text/Text you copy out of a chatbot, a PDF or a web page often carries characters you can't see. What they are, and how to find them.Tue, 27 Oct 2026 00:00:00 GMThttps://semgram.com/blog/what-a-false-positive-rate-means/https://semgram.com/blog/what-a-false-positive-rate-means/Every AI detector flags some human writing by mistake, and how often it does is the number worth asking for.Tue, 27 Oct 2026 00:00:00 GMThttps://semgram.com/blog/why-we-never-tune-detect-against-humanize/https://semgram.com/blog/why-we-never-tune-detect-against-humanize/We're building a detector and a humanizer, so we test the humanizer the way we'd test any other writer.Tue, 27 Oct 2026 00:00:00 GMT