TL;DR
SpaceX exercised its $60 billion all-stock option to acquire Anysphere, maker of Cursor, days after its IPO, with closing expected in Q3 2026. The deal adds a profitable coding app and developer distribution to SpaceX’s xAI and Colossus infrastructure, but model quality and integration remain unresolved.
SpaceX has exercised its option to buy Anysphere, the maker of the AI coding agent Cursor, in a $60 billion all-stock deal, giving Elon Musk’s company a profitable developer application while raising a sharper question about whether xAI’s Grok models can match the strength of SpaceX’s infrastructure.
The transaction calls for Cursor shareholders to receive SpaceX Class A shares, with Cursor becoming a wholly owned subsidiary if approvals are secured. The Guardian reported that a regulatory filing showed the deal will not use IPO proceeds and is expected to close in the third quarter of 2026.
Cursor CEO Michael Truell framed the tie-up as a plan to build the world’s most useful AI models, and the companies have described a co-trained model that would ship into Cursor and Grok Build. The source material says Cursor reached roughly $4 billion in annualized revenue by early June, up from about $2 billion in February.
The deal follows SpaceX’s April option to buy Cursor for $60 billion or pay a $10 billion alternative fee tied to the partnership. The Times of India reported that the acquisition is pending regulatory approval and follows months of work between Cursor and xAI compute teams.
SpaceX owns every layer
of AI now
The $60B Cursor buy completes the stack: power, compute, research, model, app, distribution. But owning every layer isn’t winning every layer — and the model is the weak one.
(Anysphere)
You can buy a coding app and a model team. You can’t buy the research lead that makes your foundation model the one everyone else builds on — which is why Anthropic pays Musk $1.25B/month, not the other way around. Owning every layer bought SpaceX the right to attempt the hard thing. It hasn’t done it yet.
Cursor Brings Paying Developers
The acquisition gives SpaceX one asset it lacked: a paid software product used daily by developers. Its AI operation already has xAI, the Grok model family, large Memphis GPU clusters, X distribution and ties to Tesla and Starlink. Cursor adds enterprise revenue and coding workflows that could feed product learning.
That does not settle the model race. Harrison Rolfes of PitchBook told The Guardian that the deal alone would not erase the gap between xAI’s models and those from Anthropic and OpenAI. For developers and enterprise buyers, the deal could affect pricing, data controls and model choice inside coding tools. For investors, it tests whether SpaceX’s post-IPO valuation can be supported by AI revenue, not only rockets, Starlink and compute leases.
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From xAI To Cursor
SpaceX folded xAI into the company in February 2026, then went public in June. The Guardian reported that SpaceX’s market value briefly reached $2.97 trillion on June 16 before closing around $2.66 trillion, ahead of Amazon, while its shares were up roughly 50% from the $135 IPO price.
The source material describes Colossus in Memphis as the strongest part of the stack: about 555,000 Nvidia GPUs across the site, roughly 2 gigawatts of power capacity and on-site gas generation. It also says SpaceX has leased spare Colossus 1 capacity to Anthropic and Google under deals that together could approach $26 billion a year. Those lease figures are attributed to SpaceX filings cited in the material; utilization claims are attributed to a reported internal xAI memo.
“the world’s most useful AI models”
— Michael Truell, Cursor CEO
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Grok Still Needs Proof
The weakest confirmed point is Grok’s standing against coding-focused rivals. Reports cited in the source material say training moved from Colossus 1 to Colossus 2 after xAI had trouble parallelizing Grok across a mixed H100, H200 and GB200 cluster. A reported internal memo put Colossus 1 utilization at around 11%, but SpaceX has not publicly laid out the full technical cause or current utilization.
It is also unclear how much Cursor’s user base will stay after the acquisition, how regulators will treat the deal, and whether developer data can improve Grok without creating privacy or enterprise trust concerns.
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Approval Then Product Tests
The immediate milestones are regulatory review, shareholder mechanics and a planned Q3 2026 close. After that, the test shifts to delivery: whether the co-trained model appears in Cursor and Grok Build, whether Cursor revenue keeps growing, and whether xAI can turn Colossus capacity into model gains rather than only compute rental revenue.
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Key Questions
What did SpaceX buy?
SpaceX agreed to buy Anysphere, the company behind Cursor, an AI coding tool used by developers. The deal is valued at $60 billion in SpaceX stock.
Why does Cursor matter to SpaceX?
Cursor gives SpaceX a revenue-generating AI application, a developer customer base and a route to improve coding models using real product workflows.
Does SpaceX now lead in AI models?
That is not confirmed. SpaceX now has assets across compute, research, models, apps and distribution, but analysts still point to Grok as trailing stronger coding rivals from Anthropic and OpenAI.
When could the deal close?
The transaction is expected to close in the third quarter of 2026, subject to regulatory approval and completion of the stock-based transaction mechanics.
Source: Thorsten Meyer AI
