Claude Has Started Putting a Copy-Paste-Proof Mark in Everything It Writes — The Line Drawn Between "AI Processed It" and "AI Wrote It"
Since August, new Claude models have begun embedding an invisible statistical watermark in generated text. A developer's-eye look at how the SynthID-Text approach works, which writing it marks and which it slips through, and the danger of confusing "AI processed it" with "AI wrote it."