---
format: "aidr-story-markdown/v1"
id: "138cab4c205352b09e65e17f52ddefe1ca6eeb69a69cbb8970ab72089c8b7264"
canonical_url: "https://aidr.today/138cab4c?lang=en"
title: "OpenAI EU Watermark Detection Falls to 17% After Word Edits"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-06T00:24:45.000Z"
category: "Regulation"
topics: ["openai","llm","devtools"]
source_urls: ["https://marketbrief.now/ai/openai-eu-watermark-detection-falls-to-17percent-after-word-edits-e6889614","https://x.com/OpenAI/status/2107164650249101695","https://x.com/OpenAI/status/2107164653147340988","https://x.com/Hesamation/status/2107167373664964837","https://x.com/AndrewCurran_/status/2107144242481271279","https://x.com/kimmonismus/status/2107168462959186341","https://x.com/rohanpaul_ai/status/2107178129215353123","https://x.com/kunchenguid/status/2107171410837934440"]
summary: "OpenAI is restricting access to its EU watermark detection tool, limiting it to vetted researchers and expert organizations due to vulnerabilities in its invisible markers. The textGrain system will be deployed for ChatGPT and Codex users in the European Union over the coming weeks to comply with Article 50 of the EU AI Act, with a global opt-in available for API customers today."
---

# OpenAI EU Watermark Detection Falls to 17% After Word Edits

> [Open the canonical story](<https://aidr.today/138cab4c?lang=en>)

**Published:** 2026-10-06T00:24:45.000Z
**Category:** Regulation
**Topics:** openai, llm, devtools

## Summary

OpenAI is restricting access to its EU watermark detection tool, limiting it to vetted researchers and expert organizations due to vulnerabilities in its invisible markers\. The textGrain system will be deployed for ChatGPT and Codex users in the European Union over the coming weeks to comply with Article 50 of the EU AI Act, with a global opt\-in available for API customers today\.

## Sources

- [Story source](<https://marketbrief.now/ai/openai-eu-watermark-detection-falls-to-17percent-after-word-edits-e6889614>)
- [Story source](<https://x.com/OpenAI/status/2107164650249101695>)
- [Story source](<https://x.com/OpenAI/status/2107164653147340988>)
- [Supporting source](<https://x.com/Hesamation/status/2107167373664964837>)
- [Supporting source](<https://x.com/AndrewCurran_/status/2107144242481271279>)
- [Supporting source](<https://x.com/kimmonismus/status/2107168462959186341>)
- [Supporting source](<https://x.com/rohanpaul_ai/status/2107178129215353123>)
- [Supporting source](<https://x.com/kunchenguid/status/2107171410837934440>)