GoKawiilOpenAI to auto-watermark ChatGPT text in EU to meet AI Act rules
OpenAI announced it will automatically watermark text generated by ChatGPT for users in the European Union, with the feature available but off by default elsewhere. The watermarking method, called textGrain, embeds subtle word-choice patterns detectable only with a specialized key, and OpenAI plans to grant detector access to select researchers and organizations through an approval process.
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The move appears tied to compliance with the EU AI Act, which took effect in August and requires detectable markings on AI-generated content, suggesting regulation is pushing AI firms toward region-specific features rather than universal standards. Because existing watermarking methods like SynthID and C2PA can reportedly be circumvented by determined users, OpenAI's proprietary approach may face similar limitations, raising questions about how effective such labeling will be in practice.
- ChatGPT will auto-watermark text by default only for EU users, off elsewhere.
- The EU AI Act, effective since August, is the stated driver for the feature.
- OpenAI's textGrain method embeds hidden patterns detectable via a restricted-access tool.
Source: arstechnica.com, 2026-10-06
Published there as: “OpenAI will watermark ChatGPT outputs by default—but only in the EU”
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