May 06, 2026 | Posted by Abdul-Rahman Oladimeji
Anthropic plans to use the full compute capacity of xAI’s Colossus 1 data center as part of a partnership with SpaceX, the company’s owner. The agreement gives Anthropic access to more than 300MW of capacity and over 220,000 Nvidia GPUs within the month. The generative AI company said the additional infrastructure will directly expand capacity for Claude Pro and Claude Max subscribers.
Anthropic said it has also “expressed interest” in partnering with SpaceX on the development of multiple gigawatts of orbital AI compute capacity. In January, SpaceX filed plans with the FCC for a million-satellite orbital AI data center megaconstellation, though the proposal still faces major technical and regulatory hurdles. A month after the filing, Elon Musk’s SpaceX announced plans to merge with his generative AI company xAI in a deal valuing the combined businesses at $1.25 trillion.
The company has faced a wave of departures since the acquisition, including most of its co-founders and dozens of employees. Usage of its Grok chatbot is also believed to have declined, while Anthropic’s Claude has reportedly seen strong subscriber growth. According to The Information, xAI’s model FLOPs utilization rate was around 11%, significantly below the roughly 40% reported by competing firms.
In April, xAI announced that capacity at the Colossus data center would also be used by AI coding startup Cursor. Cursor has separately agreed to a conditional $60 billion takeover offer from SpaceX, under which SpaceX would reportedly owe the company $10 billion if the acquisition does not proceed. The Anthropic agreement despite the company being a direct rival to xAI will allocate just under half of xAI’s estimated 500,000-GPU fleet to Anthropic. The number of GPUs assigned to Cursor has not been disclosed.
