The rocket company filed a prospectus. What it revealed is an AI infrastructure business with a $45 billion anchor contract.
According to Business Insider’s review of the S-1, Anthropic has agreed to pay SpaceX $1.25 billion per month through May 2029 for compute access. That works out to approximately $45 billion over the contract term, one of the largest disclosed AI infrastructure commitments in history. Axios confirmed the annualized figure as $15 billion per year, consistent with the monthly rate.
The Cursor option is the second headline number. The Financial Times reports SpaceX holds the right to acquire Cursor (Anysphere) for $60 billion in equity value. If SpaceX doesn’t exercise the option, a $10 billion break fee applies. Per reporting on the S-1, Cursor’s own team framed it directly: SpaceX can buy the company later this year for $60 billion, or pay $10 billion for the work. There’s no ambiguity about the terms.
Five things the S-1 discloses:
1. The compute deal structure
Anthropic’s $1.25 billion monthly commitment runs through May 2029. According to Business Insider’s review of the S-1, the agreement includes a 90-day mutual termination clause, which means either party can exit with three months’ notice, limiting the “locked-in” narrative somewhat.
2. The Cursor option
$60 billion implied equity value with a $10 billion exit fee. For context, Cursor’s Composer 2.5 ranked third on the coding agent index as recently as May 22, per TJS’s technology coverage. This isn’t an option on a speculative asset.
3. The target valuation
Multiple journalism sources describe the IPO as “potentially” or “may exceed” a $1.75 trillion valuation. That’s a reported target, not a set price. If achieved, it would rank among the largest IPOs ever filed.
4. The AI segment financials
Per coverage of the S-1, SpaceX reportedly disclosed $6.4 billion in AI segment operating losses for 2025 and $7.7 billion in AI capital expenditure in Q1 2026 alone, roughly $30 billion annualized. That’s aggressive capital deployment by any measure.
5. The governance structure
Per reporting on the prospectus, Musk would retain 85.1% of voting power following the offering. That’s not unusual for a founder-controlled IPO, but it’s notable at this scale and in an AI infrastructure context.
What to Watch
Why it matters for enterprise buyers
The Anthropic compute commitment is now a publicly disclosed contractual obligation in an SEC filing, not an operational arrangement. That changes the information landscape for enterprise AI procurement teams evaluating compute concentration risk. Anthropic’s infrastructure dependency on SpaceX is formalized and quantified. This is the third major hyperscaler compute relationship Anthropic has disclosed, alongside reported Google Cloud and Amazon commitments, suggesting one frontier lab is committing capital across multiple infrastructure partners simultaneously rather than consolidating. This is the second such infrastructure IPO story in the cycle; the OpenAI Goldman/Morgan Stanley underwriter brief from May 20 covers the same emerging pattern of frontier AI companies accessing public markets.
What to watch
The 90-day termination clause is the variable the market will price. If Anthropic can exit with three months’ notice, the $45 billion figure carries a different risk profile than a locked multi-year obligation. Watch for the SEC’s S-1 review process, which typically runs 30 days for an initial comment letter. Any amendments to the filing, particularly around the Cursor option timeline or the Anthropic termination provisions, will be material. The break fee structure means the Cursor decision is likely resolved before year-end.
TJS synthesis
The SpaceX S-1 formalizes what was previously reported as an operational compute arrangement, the May 14 technology brief on Anthropic’s Colossus Memphis deployment covered this as a capacity story. The prospectus transforms it into a disclosed financial obligation with specific termination economics. The real story isn’t the IPO; it’s what the filing reveals about how frontier AI compute is being structured and priced at scale. Watch the Cursor option timeline: if SpaceX exercises, a $60 billion coding platform acquisition closes before year-end. If they don’t, $10 billion changes hands anyway. Either outcome sets a pricing benchmark for AI developer tooling that the market doesn’t yet have.