1.8 Trillion, The Largest Unicorn in History Shut Down
On May 6, 2026, Elon Musk announced that xAI, the AI startup he founded in 2023, would be dissolved as an independent entity and fully merged into SpaceX under the new name SpaceXAI. Concurrently, SpaceX agreed to lease its massive Colossus 1 data center, containing 220,000 Nvidia GPUs, to its competitor Anthropic.
xAI's journey was meteoric. Formed with a 12-person team from DeepMind, OpenAI, and Google, it launched its "unrestricted" chatbot Grok within months. The company raised over $25 billion, reaching a peak valuation of $250 billion. However, it soon faced intense regulatory scrutiny over Grok's controversial outputs and saw a complete exodus of its founding team. Following SpaceX's $250 billion all-stock acquisition of xAI in February 2026, a rapid internal restructuring effectively ended its independence.
The shutdown is strategically tied to SpaceX's upcoming historic IPO, targeting a valuation between $1.75 and $2 trillion. By leasing Colossus 1, SpaceX positions itself as a key AI infrastructure provider ahead of the listing. The merger also consolidates Musk's AI, space, defense, and automotive ambitions under one roof, with future plans exploring orbital AI computing. While the xAI brand is gone, its technology and objectives live on within SpaceX, setting the stage for Musk's next, larger act.
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