OpenAI API Adds Optional Text Watermarking for Global Customers
October 5, 2026
OpenAI is rolling out opt-in text watermarking for select models via its API. Invisible watermarks will also be deployed for ChatGPT and Codex outputs within the European Union to comply with regional provenance requirements.
HOW THIS AFFECTS YOU
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builderYou can now implement text provenance features in your applications via the API.
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policyThis move addresses upcoming EU regulatory requirements for identifying AI-generated content.