OpenAI countersues Elon Musk, claims harassment

SAN FRANCISCO - OpenAI countersued billionaire Elon Musk on April 9, citing a pattern of harassment by Mr Musk and asking a federal judge to stop Mr Musk from any “further unlawful and unfair action” against OpenAI in a court case over the future structure of the firm that helped launch the AI revolution.

Mr Musk and OpenAI chief executive Sam Altman cofounded OpenAI in 2015, but Mr Musk left before the company became a technology star.

Recently Mr Musk, who went on to create his own AI firm, xAI, in 2023, has tried to prevent the ChatGPT maker from

transitioning to a for-profit model

, culminating in the current court case.

In order for OpenAI to secure the entire US$40 billion (S$53.62 billion) of its current fund-raising round, the company must complete its transition by the end of the year.

“Through press attacks, malicious campaigns broadcast to Musk’s more than 200 million followers on the social media platform he controls, a pretextual demand for corporate records, harassing legal claims and a sham bid for OpenAI’s assets, Musk has tried every tool available to harm OpenAI,” the company wrote in a filing in Mr Musk’s existing lawsuit against OpenAI in US District Court for the Northern District of California.

OpenAI asked the judge to stop Mr Musk from any further attacks, as well as be “held responsible for the damage he has already caused”.

The two parties are set to begin a jury trial in the spring of 2026.

In response, Mr Musk’s legal team referred to a US$97.4 billion unsolicited takeover bid earlier in 2025 from a Musk-led consortium, which OpenAI rejected.

“Had OpenAI’s board genuinely considered the bid as it was obligated to do, it would have seen how serious it was. It’s telling that having to pay fair market value for OpenAI’s assets allegedly ‘interferes’ with their business plans,” Mr Musk’s lawyer Marc Toberoff said in a statement provided to Reuters.

In a post on X, the social media platform which Mr Musk owns, OpenAI said: “Elon’s non-stop actions against us are just bad-faith tactics to slow down OpenAI and seize control of the leading AI innovations for his personal benefit.”

Mr Musk’s xAI in March acquired X

in a deal that values the social media company at US$33 billion and allows the value of his artificial intelligence firm to be shared with co-investors in X.

In 2024, Mr Musk, who is also the CEO of electric carmaker Tesla, sued OpenAI and Altman, accusing OpenAI of straying from its founding mission – to develop AI for the good of humanity, not corporate profit.

Mr Musk did not respond to a request for comment on the OpenAI filing.

OpenAI and Mr Altman have denied the allegations, while Mr Altman alleges that Mr Musk has been trying to slow down a competitor.

At stake in the lawsuit is the ChatGPT maker’s transition to a for-profit model, which the start-up says is crucial to raising more capital and competing well in the expensive AI race. REUTERS