# Musk Clarifies SpaceX-Anthropic Colossus Lease Duration > Source: > Published: 2026-05-28 18:39:50.617964+00:00 # Musk Clarifies SpaceX-Anthropic Colossus Lease Duration Elon Musk wrote on X that SpaceX "has not committed to leasing Colossus for years" and described the Anthropic arrangement as a **180-day lease with 90-day mutual cancellation rights thereafter**, Reuters reports. SpaceX's IPO filing (the S-1) describes Anthropic as having "agreed to pay a monthly fee through May 2029," including language citing **$1.25 billion per month through May 2029**, as reported by TechCrunch and Morningstar. Editorial analysis: In comparable large compute agreements, disparities between payment obligations in filings and operational lease commitments often create investor and partner uncertainty. ### What happened Elon Musk posted on X that "SpaceX has not committed to leasing Colossus for years" and called the Anthropic arrangement a **180-day lease with 90-day mutual cancellation notice thereafter**, Reuters and TechCrunch report. SpaceX's IPO filing (S-1) states the customer "has agreed to pay a monthly fee through May 2029," language that TechCrunch cites on page F-62 and that Morningstar and other outlets report as specifying **$1.25 billion per month through May 2029**. The filing also notes the agreements "may be terminated by either party upon 90 days' notice," a clause highlighted in multiple reports. ### Technical details The public disclosures frame the deal as access to compute capacity in SpaceX's **Colossus I and Colossus II** data center clusters in Tennessee, with a capacity ramp and a reduced fee during initial months, per the S-1 language summarized by TechCrunch. Multiple outlets report the S-1 describes Anthropic retaining ownership of its content, models, and related data while paying the stated monthly fee through **May 2029**. ### Industry context Editorial analysis: Industry observers note that large cloud or colo arrangements often contain two distinct contract dimensions: payment commitments and operational delivery terms, including termination or ramp clauses. When a public filing highlights long-term payment obligations while executives describe shorter operational commitments, investors and customers typically flag the mismatch as material to revenue visibility and capacity planning. ### Context and significance Editorial analysis: For AI infrastructure and enterprise forecasting, the difference between a contractually locked payment stream and a shorter operational lease window matters. Public filings that quantify potential revenue, here, outlets extrapolate up to roughly **$45 billion** over three years if uninterrupted, shape investor models, while executive statements about reclaiming capacity affect perceived availability for other AI customers and internal projects. ### What to watch Editorial analysis: Observers should track three items in disclosures and market signals: - •Any follow-up filings or amendments to the S-1 that clarify effective service obligations versus payment schedules - •statements from Anthropic or its SEC disclosures addressing its payment and service expectations - •SpaceX operational notices or billing milestones (ramp dates) reported by third-party customers or partners. Each will help reconcile the S-1 payment language with Musk's 180-day characterization ## Scoring Rationale The story affects AI infrastructure economics and investor models because the S-1 quantifies large potential revenue tied to Anthropic, while Musk's shorter-duration characterization creates material uncertainty for revenue timing and capacity allocation relevant to ML practitioners and investors. Practice interview problems based on real data 1,500+ SQL & Python problems across 15 industry datasets — the exact type of data you work with. [Try 250 free problems](/problems)