SpaceXSI offers invisible watermarking for Grok text and voice outputs
SpaceXSI offers an invisible text watermark for Grok, based on Google DeepMind's SynthID Text, to help customers comply with the EU AI Act.
By GennnAi··1 min read
Team admins can enable it model by model in the SpaceXSI Console, for seven models including grok-4.7. An x-watermark header shows whether a response is marked; detection is statistical, returns watermarked, not watermarked or uncertain, and is available on application. Longer text gives a stronger signal. Audio from voice APIs is marked with the inaudible AudioSeal watermark in the EU, the EEA and California, or on request.
Source: SpaceXSI, published on October 31, 2026.