SpaceX exercised its option on June 16 to buy Anysphere, the company behind the AI coding agent Cursor, for $60 billion in stock, according to the source material, adding one of AI’s fastest-growing paid applications to a company that already controls large-scale compute, power, research, model development and distribution.

The deal would convert each Cursor share into SpaceX Class A shares and is expected to close in the third quarter of 2026, according to the source material. Cursor would then become a wholly owned SpaceX subsidiary. SpaceX had earlier secured the right to buy Cursor for $60 billion or pay a $10 billion alternative fee.

Cursor is described in the source material as having reached roughly $4 billion in annualized revenue by early June, up from about $2 billion in February. The company, founded in 2022 by four MIT graduates, had reportedly rejected two approaches from OpenAI and drawn interest from Microsoft before the SpaceX deal.

Cursor CEO Michael Truell framed the acquisition as a joint effort to build “the world’s most useful AI models,” with a co-trained model expected to ship into Cursor and Grok Build soon. That timeline, and how the model will perform in production, remains unconfirmed beyond the company’s stated plan.

Cursor Fills SpaceX’s Application Gap

The acquisition matters because Cursor gives SpaceX something that major AI labs have struggled to build at the same commercial speed: a paid software product with developer adoption and fast revenue growth. If the reported revenue figure holds, Cursor gives SpaceX a working business at the application layer rather than only infrastructure, research and model assets.

The transaction also strengthens SpaceX’s distribution position. The source material points to X, Tesla, Optimus and Cursor’s developer base as routes through which SpaceX could push AI tools into consumer, enterprise and engineering workflows. That does not mean those channels will produce adoption automatically, but it gives SpaceX more direct access to users than a pure compute provider would have.

The deal also sharpens the central question around SpaceX’s AI strategy: whether owning infrastructure and applications can compensate for a model layer that critics say has not matched the scale of its compute resources.

Colossus Anchors the Strategy

The source material says SpaceX’s AI position rests on a stack that includes on-site power generation, the Colossus supercomputing facilities in Memphis, xAI’s research team and Grok model line, and now Cursor at the application layer. xAI was folded into SpaceX in February 2026, according to the source material.

The Memphis buildout is described as running about 555,000 Nvidia GPUs across Colossus facilities, with roughly 2 gigawatts of total power capacity. The first 100,000-GPU cluster reportedly moved from factory floor to training in 122 days, then doubled to 200,000 GPUs in 92 more days.

The source material says xAI moved Grok training to Colossus 2 after difficulty parallelizing the model on a mixed H100, H200 and GB200 build at Colossus 1. It also says SpaceX then leased capacity at Colossus 1 to Anthropic and Google, with reported monthly lease figures of $1.25 billion and $920 million, respectively.

“the world’s most useful AI models”

— Michael Truell, Cursor CEO

Grok Remains the Open Question

The main unresolved issue is whether Grok can become a foundation model that outside developers prefer to build on. The source material characterizes the model layer as the weak link, saying Grok has underperformed relative to SpaceX’s compute scale. That is an interpretation based on the described performance record, not a confirmed outcome of the Cursor deal.

It is also not yet clear how Cursor’s model team will be integrated, how much independence Cursor will retain, or whether customers will accept deeper links between Cursor, Grok and SpaceX infrastructure. The reported lease arrangements with Anthropic and Google also raise a strategic tension: SpaceX may earn large revenue from rival labs even if its own model remains behind them.

Deal Closing and Model Tests

The next milestone is the expected closing of the all-stock transaction in the third quarter of 2026. After that, the first test will be whether the promised co-trained model ships into Cursor and Grok Build on schedule and improves the coding product enough for developers to stay, pay and expand usage.

Investors and customers will also watch whether SpaceX keeps leasing spare compute to rival AI companies or redirects more capacity to Grok. The answer will show whether SpaceX is mainly becoming an AI infrastructure landlord, a full-stack AI operator, or both.

Key Questions

What did SpaceX buy?

SpaceX exercised its option to buy Anysphere, the maker of Cursor, for $60 billion in an all-stock deal, according to the source material.

Why is Cursor valuable to SpaceX?

Cursor gives SpaceX a paid AI coding application, a developer user base and a model team. The source material says Cursor reached roughly $4 billion in annualized revenue by early June 2026.

What is the weak point in SpaceX’s AI stack?

The source material identifies Grok as the weak link, arguing that the model has not matched the scale of SpaceX’s compute buildout. That remains an analysis of performance, not a final verdict.

When is the deal expected to close?

The transaction is expected to close in the third quarter of 2026, after which Cursor would become a wholly owned SpaceX subsidiary.

What remains unknown?

It is not yet clear how Cursor will be integrated, whether the co-trained model will improve performance, or how SpaceX will balance using Colossus for Grok against leasing capacity to other AI companies.

Source: Thorsten Meyer AI