OpenAI is adding text watermarking in ChatGPT and Codex

OpenAI is introducing invisible text watermarking in ChatGPT and Codex to help organizations address AI content provenance and transparency requirements, starting in the EU and offering optional API support globally. For CIOs and technology leaders, this signals a shift toward compliance-driven AI governance: IT teams will need to assess how watermarking affects content workflows, regulatory readiness, and trust controls, while also accounting for the fact that detection is imperfect and not a guarantee of authorship or accuracy.