OpenAI 在 ChatGPT 和 Codex 中推出 textGrain 文本水印
原标题：OpenAI is adding text watermarking in ChatGPT and Codex
AI 摘要
OpenAI 在 ChatGPT 和 Codex 中推出名为 textGrain 的不可见文本水印，首先仅面向欧盟用户，以满足欧盟 AI 法案要求。OpenAI 称 textGrain 在基准测试中与未加水印文本表现相近，并声称其效果匹配或超过 Google DeepMind 的 SynthID。全球 API 客户可自愿选择启用部分模型的水印输出，获批研究人员和专家机构可申请使用检测工具。OpenAI 强调水印不保证可靠检测，也不能验证准确性、所有权或人类作者身份。
正文节选
An invisible, machine-readable watermark in text output is rolling out to ChatGPT and Codex, but only for users in the European Union at first. OpenAI is adding text watermarking in ChatGPT and Codex It’s launching textGrain watermarking in the EU, but OpenAI says it won’t be the ‘global default’ yet. OpenAI says its textGrain watermarking “matched or exceeded” other approaches like Google DeepMind’s SynthID for text, which is also the basis for the watermarking Anthropic announced in August. Li