Tech Trends
How AI Text Watermarks Work and Where Major Providers Stand Under the EU AI Act
In August 2026, Claude began weaving an invisible watermark into generated text. The trigger is Article 50 of the EU AI Act. This piece walks through how token-level watermarks work, how OpenAI's October announcement of EU text watermarking changes the picture, where Grok stands, and where the mark quietly fails.
2026-08-13Ryuta Hamamoto