Tuesday, 6 October 2026 Updated 1 hour ago
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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.

Image accompanying the story: OpenAI is adding text watermarking in ChatGPT and Codex
Image: The Verge · via The Verge

According to The Verge, 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 the basis for the watermarking Anthropic announced in August.

The story is also being covered by TechCrunch. TechCrunch adds: OpenAI will watermark ChatGPT and Codex text in the EU to comply with the AI Act.

This technology story centres on the United States. Names and organisations mentioned in the coverage include ChatGPT, Codex and Anthropic OpenAI.

Why it matters

Technology stories like this can affect how people work, communicate and protect their data. It is being reported by more than one news organisation.

Key details

Location
United States · Americas
Reported by
The Verge and TechCrunch
First reported
Key names
ChatGPT, Codex, Anthropic OpenAI, European Union
Section
Technology

Sources

This is an independent summary. Read the full, original reporting from the publishers:

Read the full story at The Verge

Spotted an error? Request a correction · How this summary was produced

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