SpaceX filed its public S-1 registration statement with the SEC on May 20 ahead of a planned June Nasdaq debut. Buried in the risk-factors and customer-concentration sections is a number the original May 6 announcement did not disclose: Anthropic will pay SpaceX $1.25 billion every month through May 2029 for dedicated compute. That totals nearly $45 billion. The capacity sits at the Colossus 1 data center near Memphis — roughly 300 megawatts and an estimated 220,000 GPUs. Either party can terminate on 90 days' notice.
Public disclosure of a monthly compute bill is unusual, and it puts a precise dollar value on something the industry has been talking around for a year. $15 billion per year for one customer at one site is more than the entire 2025 revenue of most cloud providers. It also means a meaningful slice of SpaceX's near-term cash flow is now contractually tied to an AI lab — and a meaningful slice of Anthropic's compute roadmap is tied to Elon Musk's infrastructure, despite Musk's longstanding feud with the broader OpenAI-aligned camp.
Pair this with Anthropic's separate $200 billion multi-year commitment to Google Cloud and its Blackstone-Goldman enterprise joint venture, and the picture is clear: a single frontier lab now sits at the center of capital flows that, five years ago, would have funded national infrastructure projects. The SpaceX disclosure also offers a rare external benchmark for how the labs are actually pricing capacity — useful for analysts who have had to guess.
Takeaway for learners: when companies go public, they are forced to publish the contracts they kept private as startups. If you want to understand the real economics of AI — not the press-release version — read the risk-factors and customer-concentration sections of every AI-adjacent S-1 that lands this year. That is where the numbers stop being vibes.