Microsoft and OpenAI’s Close Partnership Shows Signs of Fraying

The “best bromance in tech” has had a reality check as OpenAI has tried to change its deal with Microsoft and the software maker has tried to hedge its bet on the start-up.

How Microsoft’s Satya Nadella Became Tech’s Steely Eyed A.I. Gambler

Microsoft’s all-in moment on artificial intelligence has been defined by billions in spending and a C.E.O. counting on technology with huge potential and huge risks.