Tomek Korbak, the former head of safety at OpenAI, has revealed on Twitter that he has been told by the company that they no longer trust him. Korbak made the announcement in a tweet, stating that he is no longer working at OpenAI. He shared a screenshot of an email from OpenAI's CEO, Sam Altman, informing him that the company no longer trusts him. The reason for the loss of trust is not specified in the tweet or the email, but Korbak has been a vocal critic of OpenAI's handling of its AI technology, particularly its ChatGPT model. Korbak's departure from OpenAI follows a series of high-profile departures of other top executives, including the company's head of product, Ilya Sutskever, and its head of AI safety, Jack Clark.

Three OpenAI safety researchers who were fired in November have disputed allegations of mishandling sensitive information, citing a lack of evidence to support the claims. They claim that their dismissals are having a chilling effect on the company's AI safety culture, potentially harming future research and development. The researchers have released an open letter expressing their concerns and calling for transparency and accountability.