When you start using Meta’s Muse and OpenAI’s dots for these tasks — like applying for jobs and booking hard-to-get restaurant tables — you may never go back.

© Sisi Yu

A new mode includes a study tool, but it still does a user’s homework. And a children’s safety nonprofit says the chatbot flunked its tests.

© Derek Abella

Newly unsealed court documents showed concern within Microsoft and OpenAI over the use of millions of news articles to develop A.I. systems.