Anthropic expands text watermarking to more Claude models to meet EU AI Act
Key point
Anthropic is expanding its text watermark to four more Claude models to meet the EU AI Act's December deadline, though a loophole exists in older models.
Anthropic is expanding its text watermark to four additional Claude models to meet the December deadline of the EU AI Act.
However, on the older models Claude Opus 4.6 and Sonnet 4.6, developers can bypass the watermark by tweaking a single sampling parameter. Anthropic is addressing this loophole with only a compliance warning.
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