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SpaceX has entered a definitive agreement to acquire Anysphere, the San Francisco company behind AI coding tool Cursor, for $60 billion in class A common stock. The deal was announced June 16, 2026, one week after SpaceX completed its IPO. A SpaceX subsidiary, X67 Inc., will merge into Anysphere; Anysphere survives the merger as a wholly owned SpaceX subsidiary. Close is targeted for Q3 2026, subject to regulatory approval.

The $60 billion represented a 3.4% dilution at SpaceX’s IPO valuation. That number shrank fast: SpaceX stock moved from $135 at IPO to above $200 by the time the deal was announced on June 16, adding roughly $1 trillion in market cap in five trading days. Paying in appreciated stock made the Cursor purchase materially cheaper in real terms than it would have been at IPO price.

The Stack SpaceX Now Controls

Three moves over the first half of 2026 have assembled what is now the most vertically integrated AI development stack at any single company:

• Foundation models: xAI, merged into SpaceX in February. Trains and serves Grok. The xAI engineering team relocated under SpaceX’s AI division.
• Training compute: Colossus, the Memphis campus with 220,000+ Nvidia GPUs. SpaceX rents capacity to Anthropic ($1.25B/month), Google ($920M/month), and Reflection AI ($150M/month from July 1), generating over $2.3B/month in committed revenue.
• Developer tooling: Cursor, the AI-first IDE with $2.6 billion in annualised B2B revenue and an installed base of millions of professional software engineers.

The option to acquire Cursor was disclosed in SpaceX’s April IPO preparation filings. At that point, SpaceX had already been routing Cursor to Colossus infrastructure for joint model training. The acquisition converts that arrangement into ownership.

What Cursor Brings

Before SpaceX came in, Cursor was heading toward closing a $2 billion funding round from Andreessen Horowitz, Thrive Capital, and Nvidia at a $50 billion standalone valuation. SpaceX’s $60 billion deal superseded that process entirely.

Cursor’s revenue profile is different from Grok’s. Grok is a consumer and API product competing directly with ChatGPT. Cursor is an IDE-level tool embedded in software development workflows — an install-once, use-daily product with high switching costs. The company crossed $1 billion in annualised revenue in late 2025 and had grown to $2.6 billion by June 2026.

CEO Michael Truell framed the deal as a path to scaling Cursor’s Composer agent models. Cursor has been training Composer on Colossus since May. The acquisition eliminates the vendor-client overhead and gives Cursor direct compute access at cost rather than market rate. SpaceX said a jointly trained model built with xAI and Cursor’s team will ship in both Cursor and Grok Build. No benchmark results for that model have been disclosed.

The Competitive Pressure

The acquisition directly challenges Anthropic’s position in AI coding tools. Claude Code holds the current market leadership at frontier quality, but it depends on Anthropic’s API. A SpaceX-owned Cursor running on SpaceX’s own models, trained on SpaceX’s own compute, has pricing and latency flexibility that API-dependent tools cannot structurally match.

GitHub Copilot froze new subscriptions and moved its frontier model access to its highest-paid tier earlier in June — a visible sign of pressure from the Cursor and Claude Code competition. The SpaceX acquisition strengthens Cursor’s structural position further.

How the Option Worked

SpaceX disclosed the option structure in its IPO filings. The choice was binary: acquire Cursor for $60 billion in stock, or pay $10 billion plus $8.5 billion in computing resources to continue the partnership without buying the company. Post-IPO, with SpaceX stock above the pricing level, exercising the acquisition option was the cheaper path.

The merger structure sends X67 Inc. into Anysphere; Anysphere survives as the legal entity, becoming a wholly owned SpaceX subsidiary. All Cursor common and preferred stock converts into SpaceX Class A shares at a volume-weighted average price calculated over the seven trading days immediately preceding close.

The Timing Read

The Cursor acquisition, the Reflection AI compute deal ($6.3B committed), and the Anthropic and Google compute leases all closed within a six-week window around the IPO. The sequence reads as deliberate: anchor the IPO valuation with committed compute revenue, then use post-IPO stock to buy product distribution.

SpaceX entered public markets simultaneously as a compute landlord, an AI model developer, and now an AI developer tools company. The constellation of assets answers a question Grok alone could not: how does SpaceX compete with OpenAI and Anthropic at the product layer where developers actually work?

Cursor, with $2.6 billion in annualised revenue and millions of daily IDE sessions, is that answer.