Explained: Anthropic’s plan to watermark all Claude-generated content, and how it works
Invisible watermarks will be woven directly into text generated by Claude models. It will not alter the meaning, quality, or readability of a response and can travel with the text when copied elsewhere, potentially persisting through some editing.
Anthropic, the AI company behind the Claude language model, is working on adding machine-readable watermarks to all content generated by its models, including Claude Platform, Claude, Claude Code, Claude Cowork, and Claude Tag. This move comes in response to the European Union's AI Act, which requires companies to clearly label AI-generated content to help users distinguish between authentic and synthetic material.
The watermarks will be invisible and woven directly into the text, ensuring they do not alter the meaning, quality, or readability of the response. For generated files, such as .svg, .png, or .jpg, Anthropic will include digitally signed provenance metadata, which will signal that the file was processed by Claude and can help detect whether the file has been tampered with.
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