On Tuesday, OpenAI executives, including Altman, Greg Brockman, and Ilya Sutskever, published a series of private internal emails between Musk and OpenAI executives dating from between 2015 and 2018.

The emails were referenced in a company blog post responding to Musk's lawsuit against OpenAI. It's the latest sign of the increasingly toxic relationship between Altman and Musk.

Musk, who left OpenAI in 2018, accused the AI company of abandoning its founding principles amid a multibillion-dollar partnership with Microsoft in the lawsuit filed Friday. The suit argued that the company's transition to a "capped-profit" division breached its original nonprofit contract.

The OpenAI execs published the post to announce their plans to move to dismiss the lawsuit and share "some facts about our relationship with Elon."