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x.aigithub.com/xai-orgx.com/SpaceXSI
xAI builds AI to understand the universe. It makes Grok, the assistant on grok.com, iOS, Android and X; Grok Bot, AI teammates that work on their own cloud computer; Grok Build for coding; and an API for Grok's reasoning, code, voice, image and video models. xAI joined SpaceX in February 2026, and its site now goes by SpaceXSI.
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xAI’s AI assistant on grok.com, iOS, Android and X