AI chatbot will start invisibly watermarking text so people can found out whether it was automatically generated – but not all users are happy

This move is part of the company's effort to comply with the EU regulation and transparency requirements for AI.

Anthropic will embed machine-readable watermarks in all Claude model text outputs starting August 2, 2026, complying with the EU AI Act globally.

Anthropic said new Claude models will embed an "imperceptible watermark" directly into AI-generated text.

The EU’s AI rules are having an impact.