Anthropic expands Claude text watermark to more models ahead of EU AI Act deadline

Anthropic is rolling out its text watermark to four additional Claude models to meet the EU AI Act's December deadline, but a loophole lets developers bypass it on older Claude Opus 4.6 and Sonnet 4.6.

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Timeline · 1 report

2026-10-31 19:20 · The Decoder
Anthropic's watermark rollout leaves a loophole on two older Claude models

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