A more personalized, habit-learning version of Google Now

On Tuesday during Google’s Pixel and Home product announcements, the company introduced a new voice-activated version of Google Search called Assistant, featuring a more friendly conversational interface that turns search results into one-sentence answers.

Watson is all about human insight, discovery and advice

On Wednesday, IBM’s Chief Technology Officer Rob High gave a keynote speech with an emphasis on “cognitive computing” – another term for artificial intelligence, but with a goal of changing the role between humans and machines rather than recreating the human brain in machine form.