IntelliTechs ยท Oct 06, 2026
If you use ChatGPT in the EU, the text it writes will carry a hidden signal that a detector can read. Heavy editing weakens that signal, and a missing watermark doesn't prove a person wrote the text alone.
The technology is called textGrain.
The numbers OpenAI shared describe a useful tool that is far from foolproof:
For now, you won't be able to paste a paragraph into a website and get an answer.
The backdrop is the EU's AI Act, which requires AI-generated content to be machine-identifiable. Engadget reports that OpenAI's move follows a similar announcement from Anthropic.
If you study or work in Europe, using ChatGPT will now leave a trace.
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