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OpenAI begins invisibly watermarking ChatGPT texts

OpenAI has started introducing an invisible watermark to text generated by ChatGPT in the EU. The technology aims to facilitate the detection of AI-generated text, though researchers warn of a false sense of security.

By the Aheadline editorial team·8 okt. 2026·2 min read·Source: Entity-watch: AI SverigeVerifierad signalAI-generated
OpenAI begins invisibly watermarking ChatGPT texts
OpenAI begins invisibly watermarking ChatGPT texts
OpenAI begins invisibly watermarking ChatGPT texts
By · Policy- & EU-reporter
Last updated
Vad betyder det för mig?

What happened?

OpenAI has announced that it has begun introducing an invisible watermark into text generated or processed by ChatGPT. The system works by integrating invisible patterns into the text structure, allowing for subsequent identification of whether the text was created by AI. The rollout is taking place incrementally across EU countries over the coming weeks.

Key facts

TjänstChatGPT
Målgrupp för testverktygForskare
Region för utrullningEU-länderna

”Det kan också slå väldigt fel”

— Peter Funk, AI-forskare · SVT Nyheter

Why it matters

The watermarking is being introduced to combat cheating, disinformation, and misleading AI-generated content. However, AI researcher Peter Funk warns that the technology may offer a false sense of security, as it is not 100 percent reliable, which could lead to genuine material being incorrectly flagged or AI-generated text going undetected.

Who is affected?

The change affects all ChatGPT users in the EU, including schools, universities, and workplaces where AI-generated texts are used. Initially, however, only researchers are being given the opportunity to apply for access to the detection tool to analyse texts.

Impact on the EU

The marking is being rolled out in stages across all EU countries over the coming weeks. Initially, only approved researchers will have access to the tool to identify the watermarks, a move that aligns with the EU’s increased requirements for transparency regarding AI-generated content under the AI Act.

What else you should know

The technology is based on subtle patterns in word choice that are invisible to the human eye. Researchers warn, however, that text which is heavily edited manually or translated between languages may lose its watermark, thereby reducing the tool's reliability.

Frequently asked questions

Quick answers about this story

Vad har hänt?
OpenAI har börjat införa en osynlig vattenstämpel i texter som skapas eller redigeras av ChatGPT för att göra AI-genererat innehåll spårbart.
När hände det?
OpenAI meddelade utrullningen av funktionerna i EU under våren 2024, med gradvis lansering under de följande veckorna.
Varför spelar det roll?
Det spelar roll eftersom det är ett steg mot att identifiera AI-genererad text och motverka fusk och desinformation, även om experter varnar för att tekniken ännu inte är helt tillförlitlig.
Hur påverkar det användare i EU?
Funktionen rullas först ut i EU-länderna, där godkända forskare får tillgång till verktyget för att upptäcka mönstren.
Original source
Entity-watch: AI Sverige·svt.se

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