TL;DR
SpaceX exercised its option on June 16 to buy Anysphere, maker of the AI coding tool Cursor, in a $60 billion all-stock deal expected to close in Q3 2026. The deal gives SpaceX a profitable AI application and developer base, but the strength of its Grok model remains the central open question.
SpaceX moved on June 16 to buy Anysphere, the maker of the AI coding agent Cursor, in a $60 billion all-stock deal that would add one of AI’s fastest-growing paid software products to SpaceX’s expanding compute, model and distribution network.
According to the source material, SpaceX exercised a previously negotiated option to acquire Anysphere rather than pay a $10 billion alternative fee. Each Cursor share is set to convert into SpaceX Class A shares, and the deal is expected to close in the third quarter of 2026, after which Cursor would become a wholly owned SpaceX subsidiary.
Cursor had reached roughly $4 billion in annualized revenue by early June, up from about $2 billion in February, according to the same material. The company was founded in 2022 by four MIT graduates and had drawn interest from OpenAI and Microsoft before the SpaceX deal.
The acquisition gives SpaceX a commercial AI application, a developer distribution channel and a model team. Cursor CEO Michael Truell said the companies would work on “the world’s most useful AI models,” with a co-trained model expected to ship into Cursor and Grok Build soon. The timing and technical scope of that model release have not been independently detailed in the provided material.
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.
SpaceX’s Stack Advantage
The deal matters because it would put SpaceX in control of more of the AI supply chain than most competitors: power, large-scale compute, a research group, a foundation model, a paid software application and broad distribution through X, Tesla, Optimus and Cursor’s developer user base.
That structure could reduce SpaceX’s dependence on outside cloud providers and give Cursor direct access to SpaceX’s Colossus compute infrastructure. It may also create a stronger route for Grok-based tools to reach developers through Cursor, a product category where businesses are already paying meaningful subscription revenue.
But owning the layers does not settle whether SpaceX has a leading foundation model. The source material frames Grok as the weak point in the stack, saying the model has underperformed relative to the scale of compute available to xAI and SpaceX.
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How Cursor Filled the Gap
Before the deal, SpaceX already had major AI infrastructure assets through its relationship with xAI and the Colossus supercomputing projects in Memphis. The source material says the Memphis site includes roughly 555,000 Nvidia GPUs across Colossus 1 and Colossus 2, with about 2 gigawatts of total power capacity planned or available.
SpaceX’s compute position was built quickly. The first 100,000-GPU Colossus cluster reportedly went from bare factory floor to training in 122 days, then doubled to 200,000 GPUs in 92 more. The source material cites public reporting that the initial phase cost as much as $4 billion, with silicon across the expanded site pegged near $18 billion.
Cursor was the missing commercial application layer. The source material says Cursor’s newest model was trained on tens of thousands of xAI chips, and that two senior Cursor engineers had already moved to xAI before the acquisition. Those details point to an existing technical relationship before SpaceX exercised the option.
“the world’s most useful AI models”
— Cursor CEO Michael Truell
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Grok Still Faces Questions
It is not yet clear whether SpaceX’s control of compute and distribution will translate into a stronger foundation model. The source material says xAI struggled to parallelize Grok training on a mixed H100, H200 and GB200 setup at Colossus 1, then moved training to Colossus 2 while leasing unused capacity to outside customers.
The lease figures remain source-attributed: Anthropic is described as paying $1.25 billion per month through May 2029, and Google as paying $920 million per month through June 2029, for combined compute revenue of about $26 billion per year. Those figures are attributed in the source material to SpaceX filings, but the full underlying filings were not provided here.
The quality of the co-trained Cursor-Grok model, the degree of Cursor’s independence after closing and the long-term economics of the all-stock deal remain developing issues.
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Deal Review and Model Release
The next milestones are the expected Q3 2026 closing of the Anysphere acquisition and the release of the promised co-trained model into Cursor and Grok Build. Investors, developers and AI customers will be watching whether Cursor’s product momentum continues under SpaceX ownership.
The larger test is whether SpaceX can turn infrastructure control into model leadership. Until Grok shows stronger performance against rival frontier models, the Cursor deal gives SpaceX a wider AI business, but not yet proof that its foundation model is the one developers will prefer.
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Key Questions
What exactly did SpaceX buy?
SpaceX exercised an option to buy Anysphere, the company behind the AI coding tool Cursor, in a $60 billion all-stock deal.
Why is Cursor valuable to SpaceX?
Cursor gives SpaceX a paid AI application, a large developer audience and a team already working on coding-focused models. The source material says Cursor had reached about $4 billion in annualized revenue by early June.
Why is Grok described as the weak link?
The source material says Grok has not yet matched the strength implied by SpaceX’s compute buildout. It also says xAI moved Grok training from Colossus 1 to Colossus 2 after utilization problems.
When will the deal close?
The deal is expected to close in Q3 2026, according to the provided source material.
What should developers watch next?
Developers should watch for the co-trained model planned for Cursor and Grok Build, pricing or product changes after closing, and any signs that Cursor’s existing workflow changes under SpaceX ownership.
Source: Thorsten Meyer AI
