With nearly one in 10 people on Earth using ChatGPT, OpenAI is at a turning point. Here's what you need to know.

OpenAI is said to be in early discussions about a stock sale that could value the company at about $500-billion.

Google has expanded access to its AI-powered study tool, NotebookLM, now allowing students aged 13 and up to use it.

That would represent an eye-popping bump-up from its current valuation of $300 billion, with the sale underscoring both ...