
He helped teach machines to see, then helped build the systems meant to talk back. From Oxford’s VGG network to Microsoft AI, Karén Simonyan’s career follows a question that keeps getting bigger: what should a model learn next?
The Microsoft AI chief began by listening to people one call at a time. Now he is trying to decide what billions of conversations with machines should be allowed to become.

A stranded would-be correspondent learned to interview Paris over a pint, then carried that curiosity through IDEO, Pinterest and Microsoft AI. Her career is a case study in choosing the less obvious door - and knowing when a title is only one part of a life.
Microsoft spent about $650 million to import a ready-made AI team, then gave it Copilot, Bing and an enormous distribution machine. Two years later, the wager is no longer about catching ChatGPT - it is about whether Microsoft can turn borrowed momentum into models, products and trust of its own.