The case was filed in US federal court in Texas on Monday. Elon Musk separately sued OpenAI in California to stop it from converting to a for-profit company.

Apple and OpenAI are working together to systematically exclude AI competitors, according to the lawsuit filed by X and xAI.

The case sets up a high-stakes court showdown between the richest person on the planet and one of the world’s most valuable ...

Apple could counter that partnering with OpenAI was a business decision in a competitive environment, and that it has no ...