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Morning Edition · Monday, August 31, 2026Published at 2:23 AM EDT · New York
Anthropic Details the Statistical Watermark It Is Applying to All Claude Text Output
The mark biases word selection using a key and preceding context, applies worldwide with no opt-out, and survives copying but not heavy rewriting or translation.
Anthropic has published a technical explanation of the text watermark it is adding to Claude output. The mechanism is a statistical bias on token selection rather than a hidden character or metadata field. A key combined with the preceding…
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