Elon Musk returned to the witness stand in a high-stakes trial involving OpenAI. The case could redefine AI governance and corporate control. As a result, legal professionals, investors, and regulators are watching closely.

Elon Musk spent the better part of three days on the stand, accusing OpenAI and its executives of deceiving him into donating money to help found what is now one of the world’s biggest AI companies.

“I came up with the idea, the name, recruited the key people, taught them everything I know, provided all the initial funding,” Musk said.