Toymaker Mattel is partnering with OpenAI to test the ChatGPT maker's artificial-intelligence video model Sora 2, OpenAI CEO Sam Altman said at the company's Developer Day conference on Monday. "Mattel has been a great partner working with us to test Sora 2 in the API (application programming interface) and see what they can do to bring product ideas to life more quickly. So one of their designers can now start with a sketch and then turn these early concepts into something that you can see and