Elon Musk and OpenAI presented closing arguments Thursday in a federal Oakland court, leaving nine jurors to decide whether the AI company betrayed its nonprofit mission. The three-week trial centers on whether CEO Sam Altman and president Greg Brockman improperly converted the charitable organization into a for-profit entity backed by billions in Microsoft funding.

Musk seeks $150 billion in damages and wants OpenAI to reverse its for-profit transformation ahead of a potential IPO. His lawsuit argues OpenAI violated founding principles by accepting $13 billion from Microsoft while abandoning open-source commitments. OpenAI counters that Musk abandoned the mission himself, attempting to merge the lab with Tesla for personal gain before departing in 2018.

The jury faces complex legal questions about statute of limitations, with key dates in 2021 and 2022 determining claim validity. Judge Yvonne Gonzalez Rogers will ultimately decide penalties, ranging from rejecting Musk's demands entirely to potentially dismantling OpenAI's current structure. The case threatens to reshape AI industry governance and nonprofit-to-profit conversion precedents worth over $200 billion in assets.