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OpenAI ChatGPT watermark rolls out in EU, but edits can bypass it | Cybernews

Brave/cybernews.com · 2026年10月7日 16:15 · 阅读约 5 分钟

OpenAI ChatGPT watermark rolls out in EU, but edits can bypass it | Cybernews

摘要: ADVERTISEMENT

OpenAI will watermark ChatGPT texts in EU, but there’s a catch

OpenAI’s invisible watermark is easy to bypass.

Image by Thomas Fuller

正文

OpenAI will watermark ChatGPT texts in EU, but there’s a catch

OpenAI’s invisible watermark is easy to bypass.

Image by Thomas Fuller/SOPA Images/LightRocket via Getty Images

Anton Mous

Journalist

October 7, 2026

1 min read

Key takeaways

OpenAI will add invisible watermarks to ChatGPT and Codex text for eligible EU users.

The textGrain watermark is less reliable for short text, edited text, recipes, and math content.

Replacing 25% of words can drop OpenAI’s watermark detection rate to 17%.

OpenAI is limiting detector access to approved researchers and expert organizations while it tests reliability.

Key Takeaways by

nexos.ai

, reviewed by Cybernews staff.

OpenAI is adding an invisible watermark to texts generated with ChatGPT in the EU. But it’s not quite bulletproof yet.

OpenAI’s text watermarking technology is called textGrain, which adds an invisible statistical signal to ChatGPT’s word choices.

According to the AI company, textGrain exceeds Google’s SynthID for text and works well in many cases. However, the tool is less effective in 2 situations: when a text is short and when it has been edited.

OpenAI’s detector identified watermarks in about 80% of 200-token passages, compared with about 95% of 400-token passages. Detection rates are significantly lower for content such as mathematics or cooking recipes, where there’s less flexibility in word choice.