Anthropic’s Claude Will Start Adding Invisible Watermarks to AI-Generated Text

Students and even some professionals trying to pass off AI-generated work as their own may soon have a harder time getting away with it. Anthropic announced this week that it will start adding machine-readable watermarks to content generated by its chatbot Claude, including invisible marks embedded directly into AI-generated text. With this announcement, Anthropic joins OpenAI and Google in outlining how it plans comply with transparency requirements under the European Union’s Artificial Intelligence Act. According to an Anthropic support page, new Claude models launched in the EU on or after August 2 will support the marking system from launch. Generated text will contain embedded watermarks, while supported files will carry digitally signed provenance metadata. But the system won’t be limited to Europe. Anthropic says the marks will apply to supported models across “Claude Platform (API), Claude, Claude Code, Claude Cowork, and Claude Tag, and wherever Claude is offered, worldwide.” The company says it is also working to add marking to existing models and plans to provide tools that will allow users and third parties to detect Claude’s marks. When it comes to text, Claude will hi