The June 15 brief defends the gas turbines used by a giant data center belonging to the trillionaire's company xAI, which are the target of an environmental lawsuit.
Indonesia and Malaysia were the first two countries that blocked access to Grok in January over concerns it was being misused to generate sexually explicit and nonconsensual images.
European regulators also widened a separate, ongoing investigation into X's recommendation systems after the platform said it would switch to Grok's AI system to choose which posts users see.
The announcement late Wednesday followed a global backlash over sexualized images of women and children, including bans and warnings by some governments.