SpaceX borrowed $20-25 billion within days of completing its public offering, directing the proceeds toward artificial intelligence infrastructure and computing capacity expansion. The company signed a deal with open-source AI startup Reflection worth up to $6.3 billion, converting its Colossus data center in Texas into a commercial compute platform. Anthropic, Google, and Cursor already hold contracts.

The move follows an IPO that valued SpaceX at approximately $350 billion, making it the largest public offering in U.S. history by market capitalization at debut. The debt facility carries a blended rate near 5.2% and matures in tranches between 2029 and 2034. SpaceX reported $3.2 billion in AI-related revenue for 2025, a figure one bulge-bracket investment bank projects will reach $322 billion by 2030. The company did not disclose which bank underwrote the projection, though Morgan Stanley and Goldman Sachs co-led the IPO bookrunning.

The arithmetic matters because SpaceX now operates two businesses with opposite capital intensity curves. Launch services generate cash with declining marginal costs as reusability improves. AI infrastructure consumes cash at geometric rates as model training demands double every six months. The $20 billion debt load implies Musk expects compute capacity to become a greater bottleneck than launch cadence within eighteen months. Starlink revenue of $6.8 billion in 2024 provides debt service coverage, but the company must now monetize Colossus fast enough to avoid margin compression when the next generation of training chips arrives in 2026.

The Reflection deal is the tell. Reflection is a Series B company with $140 million in funding and no disclosed revenue. A $6.3 billion contract suggests SpaceX is underwriting compute capacity at rates below hyperscaler pricing to lock in utilization before AWS, Azure, and Google Cloud reprice their own H100 and Blackwell inventory. If Colossus reaches 70% utilization by Q4 2025, the AI segment could generate $9-12 billion in annualized revenue, enough to service the debt and fund the next data center in New Mexico. If utilization stalls below 50%, SpaceX will need to tap equity or renegotiate covenants before the first tranche matures.

Watch three markers. First, whether SpaceX files an amended S-1 disclosing customer concentration risk for Colossus before June 2025. Second, whether Anthropic or Google renegotiate their contracts when Blackwell chips ship in volume this summer. Third, whether SpaceX announces a second debt facility above $10 billion before year-end, which would signal the AI bet is expanding faster than launch revenue can cover. The company has not disclosed capex plans for 2026, but two people familiar with the Texas site say a second Colossus phase could require $8 billion in incremental spending.

The debt is a countdown. SpaceX has thirty-six months to prove AI infrastructure generates returns superior to satellite internet, or the launch monopoly starts subsidizing a data center business in a market where margin compression is the only constant.