OpenAI’s new CEO, Emmett Shear, has spoken out about his time at Microsoft in a scathing social media post. He compared his experience to “selling my soul” and criticized the way Sam Altman was let go of his position leading the company.

Shear’s negative feelings towards Microsoft have been well documented. In a recent post on X, he called Altman’s termination “handled very badly” and had “seriously damaged our trust.” Shear also expressed his belief that AI development should be slowed down, which could strain the relationship between OpenAI and Microsoft.

Microsoft announced that Sam Altman and Greg Brockman would be leading a new AI team at the company. This news effectively ends any speculation that Altman will return to OpenAI or continue not to be a part of it.

Despite the fallout with Sam Altman, Emmett Shear has been appointed CEO for OpenAI. The corporation has remained silent on the matter but it seems that Altman has finally left to join Microsoft as head of its new AI team. No formal response from either company has been forthcoming yet.