OpenAI · Google · xAI · ChatGPT · U.S. · Crypto Briefing
xAI debuts invisible text watermarking to Grok API models
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Starting November 7, 2026, Grok API output will carry a hidden statistical fingerprint by default, leaving ChatGPT as the North American holdout.
Key facts
- Starting November 7, 2026, Grok API output will carry a hidden statistical fingerprint by default, leaving ChatGPT as the North American holdout
- The feature covers a list of model versions: grok-4.7, grok-4.6, grok-4.5, grok-4.3, and grok-4.20
- Starting November 7, 2026, xAI will switch on invisible statistical watermarking across its Grok API models by default
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Summary
Starting November 7, 2026, xAI will switch on invisible statistical watermarking across its Grok API models by default. The feature covers a list of model versions: grok-4.7, grok-4.6, grok-4.5, grok-4.3, and grok-4.20. Grok’s watermark works by nudging token selection toward a pattern. XAI says the process does not change the length, quality, or speed of responses.