Musk loses OpenAI court battle after jury finds he waited too long to sue

May 18, 2026

A California jury unanimously rejected Elon Musk's lawsuit against OpenAI and Sam Altman, determining that Musk had exceeded the statute of limitations for filing his claims. Musk had alleged that Altman breached their original non-profit agreement after accepting $38 million in donations by transforming OpenAI into a for-profit entity, thereby abandoning its mission to develop AI for humanity's benefit. The jury deliberated for only two hours after a three-week trial featuring testimony from Musk, Altman, and Microsoft CEO Satya Nadella.

Who is affected

Elon Musk (plaintiff who lost the case)
Sam Altman and OpenAI (defendants who won)
Microsoft (accused of aiding OpenAI, claims dismissed)
Musk's co-founders who denied him control in 2018
The broader charitable giving community (according to Musk's concerns)

What action is being taken

The jury has delivered a unanimous verdict against Musk
Musk is criticizing the decision on X (his social media platform)
Musk is vowing to file an appeal
OpenAI is continuing to focus on developing safe AI for humanity

Why it matters

This verdict represents a significant legal defeat for Musk in his ongoing feud with OpenAI and Altman, adding to his recent string of courtroom losses. The decision validates OpenAI's transformation into a for-profit structure and protects the company from Musk's claims that it improperly abandoned its charitable mission. The case highlights tensions in the AI industry between competing visions for AI development and raises questions about the enforceability of early-stage startup agreements when business models evolve.

What's next

Musk plans to file an appeal against the verdict
A complete resolution could be "dragged out for a while" according to legal experts
However, legal experts indicate appeals of fact-specific jury verdicts are very difficult to win and unlikely to succeed

Read full article from source: BBC