OpenAI’s textGrain: ChatGPT Output Gets an Invisible EU Watermark
OpenAI has confirmed that an invisible watermark called textGrain will be attached to text generated by ChatGPT and Codex across the European Union within the coming weeks, on every plan. Announced on October 5, 2026, the measure changes nothing about how output looks: read, copy or paste it and it appears identical. The signal lives … Read more