Anthropic to watermark Claude outputs invisibly as industry fights AI slop

Anthropic plans to embed an imperceptible watermark in Claude-generated text (and images) to trace AI output across copying and editing, aligning with the EU AI Act’s transparency rules; it’s part of a broader industry push to police AI-generated content and curb “AI slop,” with platforms like Substack and YouTube adopting labeling and safeguards. Watermarks face limitations and can be removed or bypassed, but the move signals rising pressure to distinguish human from machine writing.