摘要

Anthropic 公布了 Claude 文本水印的技术机制:水印不可见、机器可读,适用于 2026-08-02 及之后发布的所有 Claude 模型,更早的模型处于过渡期。

为什么重要
对做内容检测、溯源流水线,或会把 Claude 输出二次分发的开发者来说,这套水印的语义必须搞清楚。更大的信号是:水印正在变成 API 模型的标准属性。
技术细节
适用范围 2026-08-02 及之后发布的 Claude 模型;更早模型处于过渡期
机制 嵌入生成文本中,机器可读
后续更新
2026-09-02 rollout update (via the 9/1 Fable 5.1 launch): EU AI Act Article 50(2) obligations apply to models placed on the market after 2026-08-02 — Claude Fable 5.1 is the first tracked Anthropic launch shipping with output watermarking enabled, and Anthropic's watermark detection API is now in private preview (access on request). Watermark detection for provenance marking is becoming an integration surface for EU-facing deployments
标签
anthropicwatermarkprovenancedetection