Elon Musk is giving Anthropic access to SpaceX’s Colossus supercomputer, one of the most powerful AI training clusters in the world, after personally meeting with senior members of the Claude maker’s safety team.
In a new post on X, Musk says the decision to lease Colossus 1 to train Anthropic’s Claude models stems from the firm’s commitment to AI safety.
“I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good.
After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.”
Colossus 1 is a massive data center located in Memphis, Tennessee, that features 220,000 Nvidia GPUs designed for training large language models. Meanwhile, Colossus 2 is designed to be the first gigawatt-scale AI supercomputer/data center that aims to house nearly one million Nvidia Blackwell GPUs (GB200/GB300) and consume up to 1.2–1.5 gigawatts of power.
Anthropic co-founder and chief compute officer Tom Brown welcomes the news, revealing that deployment is already underway.
“In the next few days we’ll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there’s nobody better at quickly moving atoms — on or off planet Earth.”
But Musk notes that SpaceX and xAI can take away access to compute under one condition.
“Just as SpaceX launches hundreds of satellites for competitors with fair terms and pricing, we will provide compute to AI companies that are taking the right steps to ensure it is good for humanity.
We reserve the right to reclaim the compute if its AI engages in actions that harm humanity.
Doing our best to achieve a great future with amazing abundance for all.
We will make mistakes, as to err is human, but always take rapid action to address them.”
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