On Sunday, prediction market Kalshi traders kept repricing the contract on whether Elon Musk wins his lawsuit against OpenAI, with the market swinging between near coin-flip levels and deeper doubt as the April 28, 2026 trial date closes in.
The prediction markets are signaling a toss-up in Elon Musk’s legal battle against OpenAI. On Kalshi, traders have pushed the odds to nearly 45%, suggesting growing belief that Musk could prevail in his lawsuit against the AI company he co-founded.
The choppiness comes as Yvonne Gonzalez Rogers trimmed the case by tossing fraud-related counts while still allowing a jury trial on charitable-trust and unjust-enrichment theories, a setup outlined in dismissed fraud charges but cleared path for a showdown in Oakland.
The jury selection is slated to start Monday in the U.S. District Court for the Northern District of California, with opening statements expected Tuesday. The platform’s rundown also flagged anticipated testimony from Sam Altman, Ilya Sutskever, and Satya Nadella, with Musk potentially taking the stand as early as Tuesday depending on how plaintiffs sequence witnesses.
Elon Musk’s Legal Gamble: High Stakes Ahead
That looming witness parade is part of what makes the Kalshi pricing so jumpy, because each evidentiary ruling can shift how traders view the odds of a clean “win” at trial. The contract has reacted to day-to-day developments, including fresh filings and decisions on what the jury will be allowed to see.
The legal playing field also changed after Gonzalez Rogers narrowed the dispute, removing key fraud allegations and leaving claims tied to breach of charitable trust and unjust enrichment. With fewer pathways to liability, traders have had to recalibrate what success for Musk even looks like under the remaining theories.
Kalshi’s market history shows how quickly sentiment has reversed before: odds climbed to about 60% after sealed materials became public, then slid to roughly the mid-30% range by mid-March. Kalshi attributed the drop in part to the judge eliminating what it described as the strongest contract-based claim, leaving Musk with claims that can be tougher to prove.
Behind the betting is a dispute over OpenAI’s evolution from nonprofit roots into a structure that includes a for-profit arm created in 2019, with Musk arguing the shift betrayed the original mission. The lawsuit also names Altman and Microsoft Corp (NASDAQ:MSFT), reflecting how central Microsoft’s partnership has become to the company’s current model.
OpenAI’s Mission Shift Sparks Legal Showdown
In earlier statements, Musk emphasized his belief that OpenAI has strayed from its founding nonprofit mission, asserting that the organization’s transformation into a for-profit entity has misled stakeholders. This perspective is particularly crucial as Musk has alleged that OpenAI’s shift, which began in 2019 with Microsoft’s investment, has undermined its original public-benefit goals.
A deal is common enough that it could prevent either side from getting an unambiguous courtroom victory. That possibility can pull on pricing because a settlement may not map neatly to a binary “yes” outcome for bettors.
Even without a settlement, the remaining claims focus on charitable duties and alleged benefit-taking rather than the fraud counts that were thrown out, which can change the kind of evidence and narratives jurors hear. OpenAI has pushed back hard, portraying the suit as an attempt to gain an edge in the AI race and previously calling it a “harassment campaign.”
OpenAI has also warned that an outsized damages award could hit its nonprofit side, adding another layer to what’s at stake as the case moves to a jury. Separately, the company has been reported to be exploring an IPO that could value it at up to $1 trillion, a backdrop that keeps attention high as the trial begins.
Understanding The $100 Billion Damage Claim
Kalshi’s summary pegged Musk’s requested damages at more than $100 billion, a figure that alone can amplify how traders interpret each procedural win or loss. In the parallel reporting around the case, Musk has been described as seeking as much as $150 billion, with any proceeds pledged to charity.
Musk is also seeking non-monetary remedies, including changes to OpenAI’s structure such as a return to a fully nonprofit setup and leadership removals, which could matter as much as dollars if the jury finds liability on the charitable-trust theory.
The trial calendar has become the near-term catalyst for a market that has been repricing the same question almost daily.
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