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Grok plans default text watermarks for seven API models on November 7
SpaceXSI’s official API documentation says text generated by seven listed Grok models will be watermarked by default starting November 7, 2026. It covers ordinary text, structured output and tool-call arguments across API endpoints. Team admins can opt out per model, and the response header indicates whether watermarking was applied. Detection is statistical and access to the detection API is by application. The start date is future as of this review; the documentation does not establish that it is active yet.
Primary source · SpaceXSI
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