> EU wants Apple to open 'Siri AI', with access to a personal context, open to other model/AI providers.

Not sure this is the case. My understanding is what the EU wants is that users can use Siri AI or a third party AI service from, say, Anthropic or OpenAI, at the same level of capabilities, just as you can switch default browsers. It's not about the underlying LLM (that would be the huge privacy concern), it's about the product built on top. Of course how a third party AI gets its data from the device would need to be approved by the user and that third party AI provider would have to justify what it's doing with that personal data to the EU watchdogs, just as Apple would need to do.