Igor Babuschkin’s last day at the company was today, he announced on X, writing that he wants to “continue on my mission to bring about AI that’s safe and beneficial to humanity.” He said he would start a firm called Babuschkin Ventures,

The account was quickly taken down with a vague notice about rule violations, but no official reason was given. When Grok reappeared, it offered mixed explanations for the suspension, sparking widespread confusion.

Musk then called Altman a "liar" in a heated exchange, prompting the OpenAI boss to ask whether Musk would sign a sworn legal statement declaring that he had never ordered changes to the X algorithm to harm competitors or help his own companies.

The response comes after Musk threatened to sue Apple via xAI, claiming the iPhone maker was “behaving in a manner that makes it impossible for any AI company besides OpenAI to reach #1 in the App Store.