Elon Musk moved to clear up confusion around SpaceX's compute-sharing arrangement with AI company Anthropic on Wednesday, confirming the deal is structured as a 180-day lease — not the multi-year commitment that earlier reports had suggested.
According to Musk's statement, the agreement includes a mutual 90-day cancellation notice that either party can invoke after the initial six-month period expires. Critically, Musk emphasized that the short-term framing was SpaceX's idea, not Anthropic's — the reasoning being that SpaceX wants the flexibility to reclaim computing capacity from its Colossus supercomputing clusters in Memphis, Tennessee, if internal AI demand gets "super tight." Despite that flexibility clause, Musk said SpaceX won't leave Anthropic without a runway: "We won't leave them hanging and will provide a reasonable off-ramp."
The clarification matters because earlier reporting had framed the deal as running through May 2029, with Anthropic reportedly paying $1.25 billion per month for exclusive access to Colossus 1 — a cluster housing over 220,000 NVIDIA GPUs and more than 300 megawatts of capacity. Anthropic reportedly gained full exclusive access to that infrastructure as of May 6, 2026. SpaceX's S-1 filing, released during its current IPO roadshow, did reference the 90-day mutual cancellation provision but didn't specify the six-month base term — which is what prompted the confusion Musk is now correcting.
The distinction is meaningful for both companies. For Anthropic, the compute access underpins its ability to train and run frontier AI models at scale; a shorter base term introduces more uncertainty than a three-year runway would. For SpaceX, the flexibility to reclaim capacity signals that its own AI ambitions — likely tied to Starship guidance, autonomous systems, and internal xAI workloads — are growing fast enough to warrant keeping options open. Whether the deal ultimately extends well beyond the initial 180 days will depend on how aggressively SpaceX's internal compute demands scale over the next two quarters.
Sarah focuses on Tesla Energy, SpaceX missions, and the broader Musk AI portfolio. Former data analyst in clean energy. Based in San Francisco.
Sources verified at publish time. Spotted an inaccuracy? Email editorial@basenor.com.
