'Scam Altman': Elon Musk takes a dig at OpenAI's CEO ahead of courtroom showdown

Opening remarks are set for Tuesday in a courtroom showdown between billionaire Elon Musk and 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.

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OpenAI's ChatGPT 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 OpenAI Chief Executive Altman, it spotlights a debate as to 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 lab, 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 fired off a social media post on Monday calling the OpenAI chief "Scam Altman."

Scam Altman and Greg Stockman stole a charity. Full stop.

Greg got tens of billions of stock for himself and Scam got dozens of OpenAI side deals with a piece of the action for himself, Y Combinator style. After this lawsuit, Scam will also be awarded tens of billions in stock… https://t.co/R27ZeG9nNR

— Elon Musk (@elonmusk) April 27, 2026

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.

Musk, who gutted the trust and safety team at Twitter after buying the social media platform that he renamed X, faces the challenge of convincing a jury and a judge that the company behind ChatGPT was built on a lie.