Anthropic, a company that develops artificial intelligence technology, is introducing a new tool that allows third-party developers to verify whether text was generated by its AI model, Claude. The tool uses a modified version of Google's SynthID method to detect the AI's digital signature. While the technology is effective for most types of text, it may not work as well for factual content, code, or heavily rewritten text. This development could have implications for the use of AI-generated content in various industries, such as journalism and publishing.