Closing arguments begin in Musk v OpenAI lawsuit over alleged breach of charitable mission
Transformative AI New!On 14 May 2026, closing arguments concluded in Elon Musk's lawsuit against OpenAI at the federal courthouse in Oakland, California. The case tests whether frontier AI labs can be held accountable to their founding safety commitments when their corporate structures evolve, with Musk accusing the organisation he co-founded of breaching its charitable trust obligations by prioritising profit over AI safety and its original nonprofit mission.
Musk, who invested $38 million in OpenAI's early years before departing in 2018, argues the company abandoned its charter to develop artificial general intelligence for the benefit of humanity after accepting billions from Microsoft and restructuring toward a capped-profit model. His attorney Steven Molo told jurors that OpenAI violated its nonprofit mission, pointing to testimony from five witnesses who called CEO Sam Altman a "liar." OpenAI maintains its governance structure preserves its mission through board oversight and safety commitments, with lawyers arguing that Musk himself had wanted to turn OpenAI into a for-profit entity he could control, but other founders refused. The trial, which began in late April, featured testimony from some of the biggest names in AI, including Musk, Altman, OpenAI board chair Bret Taylor, and Microsoft CEO Satya Nadella.
The jury faces several critical questions: whether Musk filed his lawsuit within the statute of limitations, whether OpenAI had a charitable trust that was breached, and whether Altman, co-founder Greg Brockman, and Microsoft unjustly enriched themselves. OpenAI has argued that Musk waited too long and cannot claim harms that occurred before August 2021, with the judge noting that if the jury finds the lawsuit was filed late, she would likely direct a verdict for the defendants. The jury's verdict is advisory, and deliberations are set to begin on Monday, with a second remedies phase to determine potential damages if liability is found. Musk is seeking up to $150 billion in damages to be returned to OpenAI's nonprofit foundation, along with Altman's removal from the board.
The outcome could establish legal precedent for enforcing AI safety pledges and influence how other labs structure themselves during the transition to transformative AI. The trial has surfaced internal communications about capability development timelines and safety-capability trade-offs at a leading frontier lab, providing rare visibility into decision-making processes that typically remain opaque. If Musk wins, the verdict could derail OpenAI's planned initial public offering, which is expected to be among the largest ever, and potentially reshape the balance of power in the AI industry at a moment when the technology is increasingly seen as a potential threat to humanity's survival.