OpenAI will add invisible text watermarking (textGrain) for ChatGPT in the EU; API opt-in worldwide
OpenAI is rolling out textGrain, an invisible statistical watermarking system, for ChatGPT and Codex users in the European Union to comply with the EU AI Act, and will let API customers worldwide opt in to watermarking (including via cloud partners such as Microsoft Azure). OpenAI says textGrain performed competitively in internal tests, will be open-sourced, but detection reliability varies by text length and topic and degrades substantially with edits, and initial access to the detector will be limited to selected researchers and organizations.