Anthropic will watermark text from future Claude models worldwide

The policy covers Claude's API and cloud partners, while generated files will carry C2PA provenance metadata where supported.

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Primary source: X - M1 (@M1Astra)

Why it matters

Anthropic is making an EU transparency rule part of Claude's global model architecture. Developers will inherit the watermark across the API and cloud platforms, with no interface-level workaround.

Illustration of digital text with subtle watermarks and provenance tags labeled Claude and Anthropic, indicating API and cloud-issued origin.

Anthropic will embed invisible, machine-readable watermarks in text generated by new Claude models, applying the marking worldwide across its consumer products, developer platform and cloud distribution channels.…

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