Invisible watermarks in text written by Claude. Expanding to older models and persisting even after copy-pasting

Anthropic (latest)November 2, 2026en

Anthropic (latest)

AI Global Wire

Emails, blog posts, and reports where you had an AI help with the draft. Even if they look like normal text, how would you feel if there were a hidden mark inside indicating that it was written by an AI? With Anthropic's AI, "Claude," that is exactly what ...

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