Grok API text outputs now watermarked by default across 7 models for EU AI Act
thione · x · 2026-11-10
Per xAI's docs, starting Nov 7 seven Grok API models (grok-4.7 through grok-4.20 series) include an invisible text watermark by default, citing EU AI Act compliance. It applies to every text-generation endpoint, covering plain text, structured outputs and tool-call arguments; clients can detect it via the x-watermark: true response header, and team admins can opt out per model in the Console. A notable default-on watermarking move among major AI vendors.
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