This story is from October 5, 2026. For the latest, see today's news.
Listen to this story
0:00 / 0:00
OpenAI is deploying textGrain, an invisible machine-readable watermark embedded in text generated by ChatGPT and Codex. The feature is launching first for European Union users, with no immediate plans to make it a global default.
OpenAI claims textGrain performs as well as or better than competing watermarking techniques, including Google DeepMind's SynthID for text and the watermarking system Anthropic announced in August. The move addresses growing interest in detecting AI-generated text and verifying the origin of written content.
This is an AI-written summary. The original reporting belongs to The Verge AI. How we write these · Spot a mistake?