- OpenAI is rolling out invisible text watermarking called textGrain to ChatGPT outputs in the European Union.
- The move complies with the EU AI Act requiring generative AI products to make their outputs identifiable by automated systems.
- The technology subtly alters word selection to create a statistical signal detectable by software without degrading response quality.
- OpenAI warned the tool remains unreliable, particularly for short or edited text, and can misidentify human and AI writing.
- Access to the detection software will initially be limited to approved researchers and expert organisations for further evaluation.
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