AlexNet, created by Alex Krizhevsky, Sutskever and Geoffrey Hinton, used a deep convolutional neural network (CNN)—a powerful new type of computer program—to recognize images far more accurately than ever, kick-starting major progress in AI.

A story of control and competition unfolds, with the ongoing feud between OpenAI co-founders, Elon Musk and Sam Altman. What's the future of ChatGPT, inside the conflict?

Musk, who co-founded OpenAI, has become one of its major antagonists. He has sued the company, accusing it of departing from its founding mission as a nonprofit, and started a competing startup called xAI. On Friday, OpenAI said Musk had wanted to turn OpenAI into a for-profit company in 2017 and walked away when he didn’t get majority equity.