Cortana vs Watson Assistant


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Cortana
Cortana is your personal assistant on your Windows Phone. She's there to help make things easier for you and keep you up to date on the things that matter to you. Whether it’s to keep you looped in with your world or help you manage your everyday life, Cortana is there for you.
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Watson Assistant
Build an AI assistant for a variety of channels, including mobile devices, messaging platforms, and even robots.