CHATGPT WILL START HIDING AN INVISIBLE MARK IN EVERYTHING IT WRITES FOR YOU openai just confirmed it. its called textGrain and it hits chatgpt and codex in the EU over the next few weeks, because the EU AI Act forces it you wont see anything. no weird symbols, no hidden characters. the model just picks its words in a slightly patterned way, and a detector can read that pattern later what it can tell: "was this likely written by an openai model" what it cant tell: who you are, your account, your prompt the funny part is openai itself says it barely holds up: -> short paragraph: caught about 80% of the time -> change 1 in 10 words: detection drops from 92% to 66% -> change 1 in 4 words: 17% -> translate it or rewrite it: the mark can disappear completely the scariest part isnt the watermark. its who actually gets caught anyone who edits a little walks free. the kid who copy pastes a full essay without touching a word is the one it catches. and only "approved researchers" get the detector for now, so you cant even check your own text to be fair, openai isnt hiding any of this. they published the weak numbers themselves, API users anywhere can switch it on today, and they say theyll open source it personally i think this is bigger than a watermark. europe gets a chatgpt that marks its text, america doesnt. same AI, different rules depending on where you open it and this is just the first law. there will be more