Elon Musk testified on the opening day of his lawsuit against OpenAI, alleging that the artificial intelligence company has strayed from its original nonprofit mission. The trial began with competing narratives about the company's transformation since its founding.

Musk accused OpenAI co-founder Sam Altman of being driven by greed and leading the AI laboratory away from its charitable roots. He characterized his lawsuit as an effort to prevent what he called the "looting" of a charity. Musk also testified that he originally helped start OpenAI to prevent what he termed a "Terminator outcome," referencing concerns about potentially dangerous AI development.

OpenAI has rejected Musk's characterizations, describing his claims as unfounded. The company's position represents a stark contrast to Musk's allegations about the organization's motivations and direction.

The presiding judge issued a warning to both Musk and Altman regarding their use of social media during the proceedings. The judge cautioned both parties about their "propensity to use social media to make things worse outside the courtroom" after observing online exchanges between the two sides.

The lawsuit centers on OpenAI's evolution from its original nonprofit structure and mission. The trial is expected to examine the company's early years and the decisions that led to its current corporate structure and partnerships.