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Chatgpt is just Cortana with better marketing. AI isn’t smart, it’s just algorithms producing a facsimile of language via pattern heatmaps. What was Cortana if not just an earlier version of the same thing?
Well no, not really IMO. Cortana as far as I know wasn’t based on LLMs as we know them today, it was a way older method of NLP. You’re right that on a high level it’s pretty similar but the underlying technology is qualitatively different IMO.
I use sonicare too it’s great but you don’t really need the top end models, the tech inside is the same as the lower-mid end models it’s just some marketing bullshit.