Lawyers for Open AI and Microsoft countered that there was no evidence of a promise to maintain Open AI as a charity, and that the “sour grapes” came only after the value of Open AI soared and a jealous Mr Musk founded a lab of his own, xAI. Besides, the three-year statute of limitations had passed, they added.

In Musk v. Altman, a jury will soon determine whether OpenAI has strayed from its founding mission to ensure AGI benefits humanity. Here’s what to know.