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Claude Will Now Add Invisible Watermarks to All AI-Generated Text and Files

Imagine asking Claude to write an article, copying the entire response, pasting it into a document, and changing a few sentences. To you, it looks like ordinary text. But underneath it, Anthropic says there could be a machine-readable signature quietly embedded in the words. That is the big change Anthropic is introducing as it rolls out content-marking technology across Claude. The move comes at a particularly important moment for AI.