Anthropic to File S-1 Registration Statement at 9 a.m. ET

The S-1 is where Anthropic's numbers stop being rumor and become a document, so the filing itself carries weight beyond the eventual listing: it is the first audited-style look at how an AI developer of this scale actually earns and spends. That matters for peers weighing their own paths to public markets and for anyone holding exposure to AI-linked names. What the filing does not settle is scale — offering size, valuation and timing remain undisclosed, and whether the document clarifies them is the open question worth watching.