WORLDTECHAI SINGLE SOURCE
OpenAI is adding text watermarking in ChatGPT and Codex
First reported Source: The Verge + 1 moreLast editorial activity
What happened
An invisible, machine-readable watermark in text output is rolling out to ChatGPT and Codex, but only for users in the European Union at first. OpenAI says its textGrain watermarking "matched or exceeded" other approaches like Google DeepMind's SynthID for text, which is also the basis for the watermarking Anthropic announced in August. Like OpenAI, Anthropic made the move to meet the requirements of the EU's AI Act ; however, not everyone was happy to learn about the addition. OpenAI is an artificial intelligence company based in San Francisco, founded in 2015, and its products and services include ChatGPT.
Sources & evidence
- The Verge Reporting source
OpenAI is adding text watermarking in ChatGPT and Codex β
https://www.theverge.com/ai-artificial-intelligence/1004880/openai-chatgpt-text-watermarks-eu-ai-act - TechCrunch Reporting source
OpenAI will start watermarking ChatGPTβs text in the EU β
https://techcrunch.com/2026/10/05/openai-will-start-watermarking-chatgpts-text-in-the-eu/