ChatGPT embeds hidden watermark in EU outputs; SEOs note Google has done the same since 2024

lilyraynyc · x · 2026-10-06

SEO industry chatter reports that ChatGPT now embeds a hidden watermark into its outputs for EU users, making AI-generated text detectable, with Claude also labeling AI-generated text. SEO expert Lily Ray points out that Google has been doing something similar since 2024. Watermarking AI text is quietly becoming platform default rather than optional.

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