> Is the simpler explanation that Alpha was already an investor

Individually, yes. Anthropic surging in private markets the weekend after the supply-chain risk designation, and raising from not only Google but also Amazon in such short clip (following credibly reports of it turning down $800+ billion valuation cheques from financial investors), all while OpenAI gets pilloried in the press and struggles to hold its $800bn valuation in private markets, collectively—to me—paints a bigger picture.

Please share how OpenAI is struggling in the private markets.

There is more supply than demand flat to OpenAI’s recent raise. That’s simply not the case for Anthropic, at last raise or at comparable valuations.

Citation? Were you working on the deal?

Can’t speak to citations, unfortunately, but if you have a banker or broker with secondary flow right now, ask them which they can get you more of and at what valuation: OpenAI or Anthropic.