The legal battle between Musk and OpenAI has officially begun with a trial in the Oakland court in California, US, and the litigation has now reached a fever pitch. During the trial, Gregory Brockman, co-founder and president of OpenAI, testified for two consecutive days. Notably, his private diary from the early days of the company was presented as key evidence in court, revealing previously unknown details about power struggles and strategic transformations within this AI giant.

According to Brockman's diary entries from around 2017, he had in-depth discussions with the company's former chief scientist, Ilya Sutskever, about plans to "go their separate ways" from another co-founder, Musk. Although their relationship later became tense, the diary reflected a core consensus: both Musk and Brockman's team had considered transforming OpenAI from its original non-profit structure into a for-profit entity. This shift was driven by a shared initial goal—to attract larger funding through commercial operations to cover the massive computing costs required for AI research.

Brockman's diary not only recorded his inner turmoil about the future direction but also openly discussed how to achieve financial breakthroughs through the for-profit transition. The emergence of this evidence has made the accusation of "deviating from the mission" more complex. Musk previously sued OpenAI and its CEO Sam Altman, accusing them of violating the original commitment of being non-profit and open-source, involving commercial fraud. However, details revealed during the trial showed that Musk himself had been deeply involved in discussions about the profit model.