# OpenAI Adds Invisible Watermark to ChatGPT Text for EU AI Law

> OpenAI will add invisible watermarks to ChatGPT text in EU to comply with new AI regulations.
- Title: OpenAI Adds Invisible Watermark to ChatGPT Text for EU AI Law
- Summary: OpenAI will add invisible watermarks to ChatGPT text in EU to comply with new AI regulations. OpenAI is implementing invisible text watermarks in EU to…
- Keywords: openai, chatgpt, eu ai act, textgrain, invisible watermark, ai detection, gaming, sports, Adds, Invisible, Watermark, Text
- Source: Dexerto — https://dexerto.com/entertainment/chatgpt-text-is-about-to-become-detectable-with-invisible-watermark-to-comply-with-eu-ai-law-3416147
- Author: Dylan Horetski
- Published: 2026-10-06T18:50:00+00:00
- Read time: 1 min
- Topics: openai, chatgpt, eu ai act, textgrain, invisible watermark, ai detection, gaming, sports
## OpenAI's EU AI Compliance Move
OpenAI is preparing to add invisible watermarks to ChatGPT text in the European Union to comply with the EU AI Act.
## How TextGrain Works
TextGrain subtly changes word choices during generation to create a statistical pattern detectable by the company's system without visible markers.
## Watermark Detection Limits
Short responses under 150 words and code snippets don't require watermarks under the EU's Code of Practice for AI-generated content.
## Watermark Challenges
Editing, paraphrasing, or translating text can weaken the watermark signal, and detection isn't foolproof for all content types.
## OpenAI's Previous Efforts
OpenAI shut down its AI classifier in 2023 after it correctly identified ai text only 26% of the time.
## What This Means Next
The watermark system will roll out to eligible chatgpt and codex outputs in the eu over coming weeks for organizations to detect ai-generated text.
## Key takeaway

OpenAI is implementing invisible text watermarks in EU to identify AI-generated content under the EU AI Act.