The main reason for Anthropic watermarking Claude's text outputs (invisible markers indicating stuff as AI generated) is likely to adhere to the EU AI Act transparency requirements. On paper compliance move is easy to do.

But, there's an entire thing brewing on Reddit about it. Some, however, are saying that it disrupts for everyday folk, those students regrouping a paragraph, writers looking for synonyms, journalists who need to take a moment to summarize long documents, where it's about to get them in trouble for some sort of help. Others however say that it's unethical because Claude was only a tool and they did most of the work. What is also interesting about that is that for the output watermark, it's supposed to use the ironies of a trained watermark on noisy human data.

The majority of the pushback is falling on par with the importance of the subject. If you don't like the watermark on a summary or reorganized paragraph, then you're pretty likely to have pasted it somewhere else where you do not want it to be revealed, which is sort of why you're doing it in the first place. The training data > irony argument is a little more coherent than "digital tattoo on their forehead", but not quite as much as all questions should be.

Link: [https://techcrunch.com/2026/08/12/some-claude-users-are-mad-that-anthropics-new-watermarks-will-catch-them-cheating-at-their-jobs-classes/](https://techcrunch.com/2026/08/12/some-claude-users-are-mad-that-anthropics-new-watermarks-will-catch-them-cheating-at-their-jobs-classes/)

Anthropic's new Claude watermarks are apparently making some people big mad