AINewsPolicyOpenAI is adding text watermarking in ChatGPT and Codex\ufeffIt\u2019s launching textGrain watermarking in the EU, but OpenAI says it won\u2019t be the \u2018global default\u2019 yet.\ufeffIt\u2019s launching textGrain watermarking in the EU, but OpenAI says it won\u2019t be the \u2018global default\u2019 yet.by Stevie BonifieldOct 5, 2026, 6:08 PM UTCShareGiftImage: The VergeStevie Bonifield is a news writer covering all things consumer tech. Stevie started out at Laptop Mag writing news and reviews on hardware, gaming, and AI.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 \u201cmatched or exceeded\u201d other approaches like Google DeepMind\u2019s 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\u2019s AI Act; however, not everyone was happy to learn about the addition.OpenAI also included scores from AI benchmarks showing similar performance from watermarked and unwatermarked text. But it notes that textGrain \u201cdoes not guarantee reliable detection,\u201d and says text watermarks don\u2019t verify accuracy, determine who owns the text, measure how much a human contributed, or prove human authorship.Rolling out text watermarking in the EU.<\/p>\n
Over the coming weeks, we will introduce text watermarking to eligible ChatGPT and Codex users across all plans in the EU only. We are not making text watermarking a global default at launch. This regional approach gives us room to learn from real-world use and feedback.Enabling opt-in watermarking for API customers. Starting today, API customers around the world will be able to opt in to watermarked text outputs for select models.<\/p>\n
This lets customers decide how watermarking fits their transparency obligations and the experiences they provide to users. We are also working with cloud partners to make watermarking available for OpenAI model outputs accessed through their services in the coming weeks.Providing detector access to researchers and expert organizations. Approved researchers and expert organizations can apply starting today. In accordance with the Code of Practice, access will be initially granted on a case-by-case basis to support evaluation and improvement of text provenance.<\/p>\n
The tool will report whether it detects an OpenAI watermark, without identifying the user or revealing their prompts or conversations. Given the risk of missed watermarks and false positives, we are not making it publicly available at launch.Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Stevie BonifieldAINewsOpenAIPolicyPoliticsRegulationMost PopularAn AI couldn\u2019t beat humans at StarCraft, so it decided to cheatThe rise, fall, and rise of portable MP3 playersThe new Fitbit Edge leaksOur minds aren\u2019t equipped to handle AIThe iPad Mini is slightly cheaper again during Prime DayAdvertiser Content FromThis is the title for the native ad<\/p>\n","protected":false},"excerpt":{"rendered":"
AINewsPolicyOpenAI is adding text watermarking in ChatGPT and Codex\ufeffIt\u2019s launching textGrain watermarking in the EU, but OpenAI says it won\u2019t be the \u2018global default\u2019 yet.\ufeffIt\u2019s launching textGrain watermarking in the EU, but OpenAI says it\u2026<\/p>\n","protected":false},"author":1,"featured_media":24190,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-24189","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/posts\/24189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/comments?post=24189"}],"version-history":[{"count":0,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/posts\/24189\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/media\/24190"}],"wp:attachment":[{"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/media?parent=24189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/categories?post=24189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo.tcjhomeaccents.com\/wp\/wp-json\/wp\/v2\/tags?post=24189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}