xAI Hired Cursor Co-Founder Milich and Ginsberg to Rebuild Grok Coding from Scratch

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xAI/SpaceX jointly hired Andrew Milich (Anysphere co-founder) and Jason Ginsberg, the two engineers who scaled Cursor to $2B ARR. Both report directly to Musk. He wrote that xAI 'was not built right the first time' and expects to 'catch up and exceed competitors in coding by mid-2026.' This hire directly explains Grok Build's ambitious feature set and the SpaceX/Cursor $60B option deal.