Musk could not tolerate seeing such success for an enterprise he had abandoned and declared doomed,” read a suit by OpenAI co-founder Sam Altman.

Artificial intelligence giant OpenAI has filed counterclaims against multi-billionaire Elon Musk, accusing its former co-founder of waging a "relentless campaign" to damage the organization after it achieved success without him.

In a friend of the court filing by Harvard law professor Lawrence Lessig, a dozen former employees accuse OpenAI of abandoning its nonprofit roots and betraying the mission that originally attracted them to the organization.