SpaceX has disclosed a sweeping arrangement with AI coding startup Cursor that gives Elon Musk's company the right to acquire Cursor for $60 billion later in 2026 — or, if SpaceX walks away, to pay Cursor $10 billion for the work the two sides complete together in the interim. Bloomberg, CNBC, TechCrunch and Fortune reported the structure on April 21 and April 22, describing it as one of the largest option-to-acquire frameworks ever attached to an AI startup.
A partnership with an exit ramp built in
The headline number is the $60 billion acquisition price, but the more novel detail is the guaranteed $10 billion floor. Under the terms reported, Cursor effectively gets paid either way: a collaboration fee for the joint work on "coding and knowledge work" AI, or a full takeout if SpaceX pulls the trigger on the option. The decision window is later in 2026.
Fortune reported that Cursor's concurrent fundraising round is targeting a $50 billion valuation, up from roughly $30 billion at the end of 2025 and $2.5 billion in early 2025 — a trajectory that helps explain why SpaceX would want to lock in pricing now rather than chase the company through a later funding cycle.
Colossus becomes the real currency
The operational substance of the deal is compute. Cursor is being wired into xAI's Colossus cluster, which SpaceX and xAI have claimed is equivalent to about one million Nvidia H100 GPUs. In a statement on its blog, Cursor said it has "been bottlenecked by compute" and that the partnership will let its team "leverage xAI's Colossus infrastructure to dramatically scale up the intelligence of our models."
xAI was folded into SpaceX in a February 2026 merger. The Cursor tie-up extends that combined entity's push into application-layer AI, beyond the Grok model family.
The talent and model-supply problem
TechCrunch reported that two senior Cursor engineers, Andrew Milich and Jason Ginsberg, recently left for xAI and now report directly to Musk — a personnel bridge that predates the formal partnership announcement. The underlying strategic question remains unresolved: Cursor's product is still powered primarily by Anthropic's Claude and OpenAI's GPT models, the same vendors that now ship their own coding agents.
Implications
For Anthropic and OpenAI, the deal converts one of their biggest API customers into a partner of a direct competitor, and puts pressure on Cursor to commission or co-develop an in-house frontier model on Colossus. For the AI market, a $60 billion option on a roughly three-year-old startup resets the ceiling on what a coding-focused company can be worth. And for SpaceX, it formalizes an ambition that the xAI merger only hinted at: owning not just the model layer, but the developer surface through which most companies will meet AI.
