Elon Musk's xAI has invested $10 billion in Cursor, an AI-powered coding assistant, with an option to acquire the company for $60 billion in 2026. This strategic partnership aims to leverage xAI's Colossus datacenter to enhance Cursor's AI model training capabilities. Cursor, which launched its flagship product Composer less than six months ago, has already achieved a $2 billion annual revenue run-rate. The deal includes a $10 billion breakup fee if xAI opts out of the acquisition, highlighting the high stakes involved. Cursor's rapid growth and reinforcement learning advancements have made it an attractive investment, with major stakeholders like Andreessen Horowitz and Accel poised for significant returns if the acquisition proceeds. The partnership also aligns with SpaceX's strategy to diversify revenue streams ahead of a potential IPO.