Musk faces off with OpenAI in court over broken promises
Elon Musk arrives at the federal courthouse as opening statements begin in the trial over Elon Musk's lawsuit against OpenAI in Oakland, California, on April 28, 2026. Photo by KARL MONDON / AFP
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Elon Musk showed up for opening remarks Tuesday in a
courtroom showdown with OpenAI over whether the artificial intelligence company
betrayed its non-profit mission.
The legal clash across the bay from San Francisco pits the
world's richest person against a startup Musk once backed and now competes with
in the booming AI sector.
Musk appeared at the federal court in Oakland, seen passing
through metal detectors, ahead of opening arguments for a trial that could have
far-reaching consequences for the future of the AI industry if the Tesla tycoon
prevails.
OpenAI's chief executive, Sam Altman -- once a Musk partner
and now widely seen as his nemesis -- was also seen entering the building.
The ChatGPT-maker is a formidable rival to the chatbot Grok,
made by Musk's xAI lab.
OpenAI co-founders Sam Altman and Greg Brockman "are
confident in their position and look forward to the facts being known,"
their attorney, William Savitt, said outside the courthouse after jurors were
selected Monday.
While Musk's lawsuit is part of a feud between him and
Altman, it spotlights a debate over whether AI should ultimately serve to
benefit a privileged few or society as a whole.
Court filings lay out how Altman convinced Musk to back
OpenAI in 2015, acting as a co-founder for a non-profit lab whose technology
"would belong to the world."
Musk pumped millions of dollars into the group, which he
subsequently left.
OpenAI established a commercial subsidiary as it needed
hundreds of billions of dollars for data centers to power its technology.
Musk argues in his lawsuit that he was deceived about
OpenAI's mission being altruistic.
He is expected to testify in the trial, possibly as early as
Tuesday.
In a social media post on Monday, Musk derisively called the
OpenAI chief "Scam Altman."
San Francisco-based OpenAI has countered in court filings that
its break-up with Musk was due to the Tesla tycoon's quest for absolute control
rather than its nonprofit status.
"His lawsuit remains nothing more than a harassment
campaign that's driven by ego, jealousy and a desire to slow down a
competitor," OpenAI said of Musk in a recent X post.
The judge presiding over the trial will decide by late May
-- guided by an advisory jury's findings -- whether OpenAI broke a promise to
Musk in a drive to lead in AI or just smartly rode the technology to glory.
Along with calling for OpenAI to be forced to revert to a
pure nonprofit, Musk's suit urges the ouster of co-founders Altman and
Brockman, who is the startup's president.
Musk, who had sought as much as $134 billion in damages, has
since renounced any personal benefit, pledging to redirect any award to the
OpenAI nonprofit.
Judge Yvonne Gonzalez Rogers has reserved the right to
determine any remedies herself, without the jury's input.
OpenAI now has a hybrid governance structure, giving its
nonprofit foundation control over a for-profit arm.

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