Anthropic rolled out a feature that stops undetected AI-generated writing0

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• August 11, 2026

It’s going to get a lot harder to let Claude be a ghostwriter for everything from novels to homework. On Monday, Anthropic said new Claude models will embed an “imperceptible watermark” directly into AI-generated text. The watermark doesn’t change the text’s meaning or readability, but travels with it when copied and pasted and “may persist