Lots of details in this Apple blog post about the new AI models. Looks like the on-device models are similar to other small-ish LLMs, and the server models are roughly comparable to GPT-3.5. GPT-4o is still bigger, which is why the OpenAI partnership fits. I think Apple’s strategy here makes sense.

yes, a hybrid approach makes more sense - including allowing other companies' products to interface with Siri. Choose your poison, chatGPT, Gemini, etc., even barf xAI's grok (assuming Tim wants to risk it)
