SpaceXAI Embeds Grok Directly Into Cursor, Shifting From Loose API Partnerships

SpaceXAI launched Grok 4.5 on July 8 as Cursor's default model, following an April partnership that includes options for SpaceXAI to invest $10 billion or acquire the company outright for $60 billion. Unlike API partnerships that let products swap models freely, this joint development ties Cursor's roadmap directly to SpaceXAI's—a consolidation that narrows rather than expands user choice.