OpenAI is adding an invisible, machine-readable watermark called textGrain to ChatGPT and Codex text in the EU to comply with the AI Act, while making it optional for API users worldwide.
OpenAI is adding invisible textGrain watermarks to ChatGPT in the EU, while letting API customers worldwide opt out. Tests show detection rates as high as 95 percent, falling to 17 percent when a quarter of the words are replaced.
Why it matters: The opt-out for API users means some AI-generated text may carry no detectable watermark, while diluted edits sharply reduce detection reliability.
Written by AI from The Decoder's published text. Read the original for full details.
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OpenAI outlines EU text watermarking approach for ChatGPT
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