Announced 5 Oct 2026 · Sources checked
How does textGrain work?
It adds a statistical signal through word choices. OpenAI says editing, short passages, and constrained subjects can weaken detection.
What does a detection result mean?
The signal can indicate that an OpenAI model processed text. It does not identify a user or measure human contribution. Missing a watermark does not prove a human wrote the passage.
Common questions
Is this a global ChatGPT default?
No. The planned ChatGPT and Codex rollout is EU-only at launch.
What to remember
A watermark does not establish accuracy or authorship.
Sources & further reading
How this story was made
Written by Kristian Kostov with AI assistance and checked against the linked sources. Company performance claims are attributed to the company. Analysis reflects AiLookout’s interpretation; we have not independently tested the products discussed. Cover photography is illustrative and does not depict the specific announcement or product.
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