Elon Musk posted on X on May 28, 2026, that SpaceX had only agreed to lease its Colossus AI training data center clusters to Anthropic for six months – not for the multi-year period that earlier descriptions of the deal implied. “SpaceX has not committed to leasing Colossus for years, although it’s possible that may be what happens,” he wrote. The formal structure is a 180-day lease with a mutual 90-day cancellation notice thereafter. Musk added: “The short term was our request, not Anthropic’s. We won’t leave them hanging and will provide a reasonable off-ramp, but if compute gets super tight I said we might need it back at some point.”
The immediate context is SpaceX’s IPO filing, submitted last week. The regulatory document disclosed that Anthropic is paying SpaceX $1.25 billion per month for compute capacity from the Colossus and Colossus II clusters in Memphis, Tennessee, through a contract structured through May 2029. But it also disclosed that either party could terminate with a 90-day notice. The IPO filing and Musk’s post are not necessarily contradictory – the contract may run to 2029 if neither party cancels, but SpaceX reserves the right to reclaim the clusters. The gap between those two readings is where the ambiguity lives, and Musk’s Thursday post narrowed it without fully resolving it. What SpaceX signed was a short-term lease with an option to extend, not a multi-year committed capacity agreement. YourDailyAnalysis breaks down the implications for Anthropic’s infrastructure planning, for SpaceX’s IPO revenue projections, and for how the compute market prices capacity security. The distinction matters for Anthropic’s infrastructure planning and for how investors reading SpaceX’s IPO filing should assess the compute revenue line.
The financial dimension sits uncomfortably in SpaceX’s IPO prospectus. The editors at YourDailyAnalysis flag the revenue reconciliation as the first thing a careful investor should check before pricing Colossus into SpaceX’s valuation model. The AI segment – which encompasses Colossus operations – lost approximately $2.5 billion from operations in the March 2026 quarter on segment revenue of $818 million. A $1.25 billion monthly payment from Anthropic would generate roughly $3.75 billion per quarter at the stated rate, which is several times the segment’s reported revenue. Either the Anthropic contract did not begin generating revenue at full rate in Q1, or the $818 million revenue figure reflects a narrower accounting definition of the AI segment. Investors reading the filing would need to reconcile those numbers before pricing the compute revenue contribution into their valuation models. The issue is not trivial given that SpaceX’s IPO is expected to be among the largest in history, with some estimates putting the target valuation above $1.5 trillion.
There is a third scenario beyond Musk reclaiming the clusters and the arrangement continuing indefinitely. SpaceX posted last week that it is in discussions with other companies about “offering AI compute as a service at significant scale.” If SpaceX brings on additional compute customers, the Colossus clusters become more valuable to SpaceX itself as an AI infrastructure provider, and Anthropic’s position as primary tenant becomes more competitive – and potentially more expensive. The cancellation option that Musk reserved is not merely a contingency for compute scarcity; it is also a negotiating lever in a market where AI compute capacity commands premium prices. The conflict of interest is significant. Reporters at YourDailyAnalysis note that no third-party arbiter governs the pricing or availability terms of the Colossus lease under a scenario where SpaceX’s own AI compute demand grows.
The Anthropic side of this equation is equally consequential. The company raised $30 billion in February 2026 at a $380 billion post-money valuation, posting a $14 billion annualized revenue run rate. It is reportedly targeting a 2026 IPO. For Anthropic’s capital planning and IPO readiness, the security of its compute supply is a direct input to financial projections – and a six-month rolling lease on its primary training infrastructure is a meaningful risk that analysts at Your Daily Analysis expect prospective IPO investors to price carefully into their assessments.
The cleanest read on Thursday’s X post is that Musk did not want the IPO filing’s description of the Anthropic contract to create the impression of a committed long-term revenue stream. He got ahead of that impression. What that actually means for the compute relationship over the next 18 months depends on whether SpaceX’s AI customer pipeline fills faster than Anthropic’s training needs grow.
