Anthropic watermarks Claude output globally following EU requirements
AI company Anthropic is introducing invisible watermarking to all material generated by Claude. The measure is being implemented to comply with the EU AI Act and will apply globally.
What happened?
AI company Anthropic has announced that it will embed invisible watermarks into all text and files generated by its Claude AI model. This marking is applied globally to all generated output, regardless of where the user is located. The decision has been made to comply with new transparency requirements set out in the EU AI Act.
Key facts
| Publiceringsdatum | 11 augusti 2026 |
|---|---|
| Regelverk | EU AI Act (EU:s AI-förordning) |
| Omfattning | Global täckning för text och filer |
Why it matters
The requirements stem from the EU AI Act, which compels developers of AI systems to clearly label AI-generated material to combat disinformation and increase transparency. Rather than limiting the feature to EU users, Anthropic has opted for a global rollout, demonstrating how EU legislation continues to shape global technical requirements, known as the 'Brussels Effect'.
Who is affected?
The change affects all users and developers using Claude globally, including Swedish companies and public sector actors. Users will not perceive any difference in the appearance of the text, but the content will be identifiable as AI-generated by specialised detection tools.
Impact on the EU
The EU AI Act places strict requirements on the transparency and labelling of AI-generated content. By implementing this feature globally, Anthropic avoids creating separate technical systems for different regions, setting a new standard for how global AI companies manage European regulations.
What else you should know
Previously published information mentioned 2 August 2026 as the start date for the marking, but according to official information released on 11 August 2026, the invisible watermarking is being introduced globally in conjunction with the entry into force of the AI Act's transparency rules.
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