Anthropic to start watermarking Claude-generated text, images
Anthropic PBC has announced plans to embed an invisible watermark in text and images generated by Claude.
The Register reported the change today, citing a help desk article published on Monday. It applies to the Claude artificial intelligence model series and the Anthropic services that it powers.
The watermarking mechanism is designed to bring Claude into compliance with the European Union’s AI Act. The law, which went into effect in 2024, includes a voluntary clause known as the Code of Practice that Anthropic has signed. The provision requires model providers to mark AI-generated content.
Anthropic says text watermarking will be performed by Claude models released after Aug. 2. It plans to bring the capability to earlier models further down the line. According to the company, the watermark is invisible and persists if the text that contains it is copied to other applications. It may even remain in place if users make edits.
