# OpenAI Embeds Watermarks in EU ChatGPT, Codex Outputs

> Source: <https://osintsights.com/openai-embeds-watermarks-in-eu-chatgpt-codex-outputs>
> Published: 2026-10-05 23:10:05+00:00

OpenAI is taking a proactive approach to responsible AI development by introducing an invisible watermark to ChatGPT and Codex outputs in the European Union, helping to identify AI-generated content. This innovative technique, called textGrain, subtly alters word choices to create a detectable pattern.