SpaceX's June 2026 IPO and its $60B acquisition of Cursor set records for venture-backed exits

TLDR

• SpaceX's $1.77 trillion IPO and $60 billion Cursor acquisition set records for venture-backed exits.¹
• Musk says SpaceX bought Cursor for its coding training data, not its product.³
• OpenAI is winding down its contract supplying models to Cursor, with a 12 November 2026 cutoff.⁵

Per Crunchbase, SpaceX listed on 12 June 2026 at a $1.77 trillion valuation, the largest IPO ever completed. It anchored a record $104.8 billion US IPO quarter. Days after listing, SpaceX acquired AI coding platform Cursor for $60 billion, the priciest purchase of a private, venture-backed startup on record. Even with these blockbuster deals, acquisitions stayed the dominant exit route, accounting for nearly 68% of startup exits in Q1 2026.

Update, what changed: Elon Musk has given the clearest explanation yet of why SpaceX paid $60 billion for Cursor, calling it a data play rather than a product purchase. Musk wrote that building a "compelling SI" requires a large volume of coding training data and named only three organisations, OpenAI, Anthropic and Cursor, as having enough of it.³ SpaceX had merged with Musk's xAI earlier in 2026 and is racing to compete with OpenAI and Anthropic's own coding tools, giving Cursor's data a strategic value beyond the product itself.³

The mechanics of the deal, previously known only in outline, are now on the record. Per SpaceX's SEC filing, the merger of SpaceX's acquisition vehicle into Anysphere became effective 14 August 2026, with Cursor continuing on as a wholly owned subsidiary; about 389.3 million SpaceX Class A shares were issued as consideration, priced off a seven day volume weighted average of SpaceX's Nasdaq listed stock, implying the $60 billion equity value.⁴ Two days before that close, xAI published the model card for Grok 4.6 disclosing that it had received "supplemental training on anonymized Cursor workflow data" and was "developed in collaboration with Cursor," converting what had been read as a thesis about the deal into a company disclosed fact.⁴ Since the deal closed, Cursor has gained access to Colossus, SpaceX's supercomputer running 200,000 Nvidia GPUs that Anthropic also uses, and has helped jointly train xAI's Grok 4.5 and Grok 4.6 models using what Musk described as trillions of tokens of Cursor data, the first models Cursor has helped build that were not solely for software engineering.³

The acquisition has also cost Cursor one of its original model partners. OpenAI notified SpaceX it is winding down its contract to supply models to Cursor, with developer access cut off 12 November 2026, saying it "cannot be confident that SpaceX will use our technology within our terms of service" given Musk's companies' prior record of contract violations, including testimony that xAI had broken OpenAI's terms of service.⁵ OpenAI said the decision came after nearly four years of working with Cursor's team and was aimed at giving affected developers the maximum notice its contract allowed.⁵

Why it matters: the exit window that reopened with SpaceX's record IPO is now also reshaping the AI coding market from the inside, as the Cursor deal reframes from a straightforward product acquisition into a bet that proprietary coding data, not raw compute, is the scarce resource for frontier AI, a bet already pulling Cursor out of a four year OpenAI partnership and into Musk's own model stack.