Tagged Colossus · show all articles
xAI rarely publishes its own postmortems. What exists instead is a paper trail of deleted prompts, court filings and letters from state officials — ten of those documented incidents, each tied to a specific, named, dated source.
xAI says Colossus is the fastest AI supercomputer ever built. Set beside Microsoft, Google, and Amazon's own infrastructure disclosures, the documented differences are in speed, siting, and power sourcing, not in a single winner.
xAI has published some specifics about Grok's training and a great deal about Colossus's scale. Reporting and litigation filled in most of what it has not said about power. This piece keeps each kind of evidence separate.
xAI's own dated announcements, set against independently verified construction and permitting records for the Colossus datacenter, with an explicit line drawn between what the company has disclosed and what remains an unconfirmed parameter rumor.