Elon Musk intercepted Anthropic's largest client for $60 billion: analysis of the Cursor acquisition deal
An event has occurred in the world of artificial intelligence that could dramatically shift the balance of power ahead of one of the most anticipated IPOs of the year. Elon Musk acquired Anysphere, the developer of the popular AI programming tool Cursor, for $60 billion, paying with SpaceX shares. The deal closed just days before Anthropic's stock market debut, and in my opinion, this is no coincidence but a carefully planned strategic move.
The crux of the intrigue lies in the fact that Cursor was built on Anthropic's Claude model. Essentially, every engineer using the platform became a paying customer of Anthropic "under the hood." The tool, especially its flagship Composer feature, became one of the most beloved products in Silicon Valley and among engineering teams in the Fortune 500. It was precisely due to the Cursor and Claude combination that the term "vibe coding" emerged — an approach where a programmer describes a task in words, and the AI writes the code. This term was introduced in early 2025 by a researcher experimenting with Composer based on Claude Sonnet.
How the Deal Went Down and Why It's a Blow to Anthropic
The most notable aspect of this story is the payment mechanism. Not a single dollar in cash: all $60 billion was paid in SpaceX shares. Musk capitalized on several days of stock market frenzy following SpaceX's IPO on June 12 at a price of $135 per share. By Tuesday, the shares were trading above $211. Thus, he "printed" $60 billion in fresh capital in the form of shares and immediately spent it on a pre-agreed purchase. SpaceX investors, meanwhile, faced dilution of approximately 3.4%.
For Anthropic, losing Cursor means losing one of the largest external channels for monetizing Claude. Anthropic's corporate revenue surged in 2025, and a significant portion of this growth was driven precisely by engineers paying through Cursor. Now this revenue stream is cut off. According to data from the service Ramp, Cursor's share among corporate clients was already declining: from 41% in June 2025 to 26% in May 2026, losing ground to GitHub Copilot and Amazon Q. Nevertheless, it was a key channel.
Why Did Musk Go Through with This Deal?
From my perspective, Musk's motives are obvious. His own AI division, xAI, was experiencing serious difficulties. By the end of March 2026, all 11 co-founders had left the company, and Musk himself admitted that xAI was "built incorrectly from the start." For SpaceX to have a compelling AI story ahead of its public market debut, the simplest solution was to buy a brand that engineers already trust. And Musk paid 20% more for Cursor than the $50 billion valuation that investors like Andreessen Horowitz and Nvidia considered aggressive.
My analysis: This deal is a brilliant, albeit expensive, move by Musk that delivers a direct blow to Anthropic's valuation ahead of its IPO. If Anthropic cannot quickly convince Wall Street that the lost revenue from Cursor can be replaced, one of the most anticipated AI offerings could face serious jeopardy. The market will be closely watching how the company explains the loss of this strategic sales channel to investors. In the short term, this creates significant uncertainty around Anthropic's valuation.