The big difference between ChatGPT and Siri right now is that ChatGPT is a large language model, whereas Siri is a token-based system. As a result, ChatGPT is vastly better at understanding and responding, whereas Siri can do things on the local device. Apple’s promise of an LLM-based version of Siri with Apple Intelligence was the big thing that the company had to admit it couldn’t deliver during the iOS 18/macOS 15 cycle and thus has stopped promising for a specific date.
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