The operation, which SpaceX already announced two months ago, looked like a win-win of book. Now it seems even more so, because SpaceX has had an absolutely extraordinary debut on the stock market, and because Cursor has become in its own right one of the reference AI agents for programmers. It is the opportunity for SpaceX and its xAI division to sneak into the company, but they need one more element to win that race.
SpaceX buys Cursor. Or rather Anysphere, the company behind the popular AI agent for programming Cursor. SpaceX just announced itwhich completes the purchase for the previously agreed figure, $60 billion in shares, and as expected everything depended on how successful the recent IPO of Elon Musk’s company was. This exit has been absolutely triumphant, and that has given him complete room for maneuver to complete the acquisition.
Cursor needed computing power. Although this AI agent had become one of the favorites of programmers, the company did not have direct access to computing capacityand as was the case with OpenAI or Anthropic, it had to “rent” the infrastructure from companies like xAI. By being an integral part of SpaceX, it automatically stops having that problem, and that gives it a lot – a lot – room for maneuver to be able to satisfy demand and, above all, to polish the native models that are supported in Cursor, like Composer 2.5.
Rapid growth. Cursor’s business has grown furiously since the company was founded in 2022. According to Reutersits annualized revenue is currently $2.6 billion, a figure that makes it clear that the size of the startup is notable.
xAI’s partners are piling up. The only problem with the operation is that xAI is little by little becoming another hyperscaler, like Amazon, Microsoft or Google already are. Elon Musk’s company has two of the most important clusters in the world, Colossus and Colossus 2but since Musk himself did not take advantage of this computing capacity, he began to offer it to other companies. Anthropic and Google have reached agreements with xAI precisely to be able to use its computing power, and it remains to be seen if that can be problematic for Cursor.
What are you doing, Grok? This is undoubtedly a wise move for SpaceX and especially for its xAI division, which has not yet managed to catch on in the market. The Grok AI model has a performance that is currently not only far from the frontier models from Anthropic, OpenAI or Google, but even from Chinese models such as DeepSeek v4 or Kimi 2.6.
According to the Artificial Analysis index in programming tasks, Grok 4.3 is very far from the best models: it has 41 points compared to Claude Fable 5’s 62. Source: Artificial Intelligence.
A golden opportunity. Cursor had already developed its own model with the aforementioned Composer 2.5, a version derived from Kimi 2.5. Now this AI agent has a unique opportunity to put all the focus on Grok if this model manages to advance as expected, especially in the field of programming that is managing to generate income for AI companies. Tell Anthropic.
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