# OpenAI is adding text watermarking in ChatGPT and Codex

**Published:** October 5, 2026
**Author:** Stevie Bonifield
**Source:** The Verge — AI
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/openai-is-adding-text-watermarking-in-chatgpt-and-codex

An invisible, machine-readable watermark in text output is rolling out to ChatGPT and Codex, but only for users in the European Union at first. OpenAI says its textGrain watermarking "matched or exceeded" other approaches like Google DeepMind's SynthID for text, which is also…

> From the original source: **The Verge — AI**
> [Read full article at The Verge — AI](https://www.theverge.com/ai-artificial-intelligence/1004880/openai-chatgpt-text-watermarks-eu-ai-act)

**Tags:** #Google DeepMind #OpenAI #Anthropic

---

*AI Qazaqstan — non-commercial informational portal about AI in Kazakhstan. Machine translations and summaries are AI-generated.*