---
format: "aidr-story-markdown/v1"
id: "208c56499592c20e090194fa546dcea168e4b352747d1098895131a2c85eb6cb"
canonical_url: "https://aidr.today/208c5649?lang=en"
title: "OpenAI will watermark ChatGPT text in the EU but makes it optional for API users worldwide"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-05T17:32:42.000Z"
category: "Regulation"
topics: ["openai","regulation","llm"]
source_urls: ["https://the-decoder.com/openai-will-watermark-chatgpt-text-in-the-eu-but-makes-it-optional-for-api-users-worldwide/","https://www.theverge.com/ai-artificial-intelligence/1004880/openai-chatgpt-text-watermarks-eu-ai-act","https://techcrunch.com/2026/10/05/openai-will-start-watermarking-chatgpts-text-in-the-eu/"]
summary: "OpenAI is adding invisible text watermarks to ChatGPT in the EU, while making the feature optional for API users worldwide, with detection rates reported as high as 95 percent."
---

# OpenAI will watermark ChatGPT text in the EU but makes it optional for API users worldwide

> [Open the canonical story](<https://aidr.today/208c5649?lang=en>)

**Published:** 2026-10-05T17:32:42.000Z
**Category:** Regulation
**Topics:** openai, regulation, llm

## Summary

OpenAI is adding invisible text watermarks to ChatGPT in the EU, while making the feature optional for API users worldwide, with detection rates reported as high as 95 percent\.

## Sources

- [Story source](<https://the-decoder.com/openai-will-watermark-chatgpt-text-in-the-eu-but-makes-it-optional-for-api-users-worldwide/>)
- [Story source](<https://www.theverge.com/ai-artificial-intelligence/1004880/openai-chatgpt-text-watermarks-eu-ai-act>)
- [Story source](<https://techcrunch.com/2026/10/05/openai-will-start-watermarking-chatgpts-text-in-the-eu/>)