A U.S. judge lets Musk’s 2024 lawsuit against OpenAI and Microsoft go to trial in April 2026 over claims they broke their nonprofit AI mission.

A U.S. federal judge has allowed Elon Musk’s 2024 lawsuit against OpenAI and Microsoft to proceed to trial in late April 2026, rejecting efforts to dismiss claims that OpenAI abandoned its nonprofit mission by accepting Microsoft funding and becoming for-profit. Musk, a co-founder who contributed $38 million, alleges the company betrayed its original goal of open, safe AI. The case hinges on whether OpenAI violated its founding principles and fiduciary duties. OpenAI calls the claims baseless and part of a harassment pattern, while Kalshi betting markets now favor Musk’s xAI in the dispute. The trial could impact OpenAI’s future fundraising and public market plans.