Anthropic 推出水印检测 API，助力第三方识别 Claude 生成文本
原标题：Anthropic announces watermark detection API that will let third parties detect Claude's AI texts
AI 摘要
Anthropic 宣布将推出水印检测 API，允许第三方开发者将 AI 文本检测集成到自己的应用中。该水印基于 Google DeepMind 的 SynthID Text 方法，通过调整单词选择的随机性来创建可追踪模式，且不影响文本内容、创意或可读性。此功能旨在遵守欧盟《人工智能法案》，所有 2025 年 8 月 2 日后发布的模型均支持水印，旧模型将在未来几个月内获得该功能。水印在短文本或事实密集文本上可靠性较低，且无法区分完全由 AI 生成或仅经过大量编辑的文本。
正文节选
Anthropic announces watermark detection API that will let third parties detect Claude's AI texts Anthropic will soon offer a watermark detection API that lets third-party developers plug AI text detection into their own apps. The company uses a variant of the SynthID Text method that Google Deepmind published in Nature in 2024 for its Claude AI model. The watermark tweaks the randomness source during word selection, creating a traceable pattern. According to Anthropic, this has no effect "on the