Emmett Shear, the new CEO of OpenAI, has expressed his negative views on his time at Microsoft in a post on X. He compared his experience to “selling my soul” and criticized the company for handling Sam Altman’s termination poorly, which he said had seriously damaged their trust.

Shear’s former colleague, Sam Altman, was let go of his position leading OpenAI and was replaced by Greg Brockman as head of a new AI team at Microsoft. This announcement put an end to any speculation that Altman would return to OpenAI or continue not to be a part of the company.

Shear’s social media posts suggest that he wants to slow down AI development, which is unlikely to benefit the relationship between OpenAI and Microsoft. The sudden turn of events has startled the corporation, which has been silent about the reappointment of Shear as CEO. It seems that Altman has finally gone to join Microsoft to head up a new AI team, but no formal response from either company has been forthcoming.