Only Google was willing to do what Apple wanted for a reasonable price.

They licensed Gemini and Google infrastructure not just for use, but to accelerate the creation of the three independent Apple Foundation Models announced today:

- AFM Core

- AFM Core Advanced

- AFM Cloud

Google also worked to be able to host AFM Cloud on their infrastructure per Apple's private cloud compute architecture, including some form of independent third party review/audit.

I suspect the only two organizations with both the model and the infrastructure needed for Apple were Google and xAI - and I'm not sure Apple would touch Grok with a ten foot pole, even if xAI were willing to let it be used for training.