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OpenAI trial live updates: Musk takes the stand again after heated cross-examination

Cnbc · · 289 words · By Ashley Capoot
open_in_new Read the original article: https://www.cnbc.com/2026/04/30/openai-trial-elon-musk-sam-altman-live-updates.h…

fact_checkFact-Check Results

14 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 7
schedule Pending 4
help Insufficient Evidence 2
info Single Source 1
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“Elon Musk will take the stand for the third time on Thursday.”
CORROBORATED
Multiple web search results from different news outlets (Reuters, general updates) confirm that Elon Musk is expected to return to the witness stand on Thursday for cross-examination.
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web search NEUTRAL — 14 hours ago · OAKLAND, California, April 30 (Reuters) - Elon Musk is due to return to the witness stand on Thursday for a second day of cross-examination by Sam Altman's lawyer, in a high-stakes tria…
https://www.usnews.com/news/top-news/articles/2026-04-30/elo…
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web search NEUTRAL — 1 day ago · Seems like Musk will be coming back Thursday. Altman and Microsoft CEO Satya Nadella are still waiting to testify later. The trial resumes Thursday morning with Friday an off day.
https://www.nbcbayarea.com/news/local/openai-trial-elon-musk…
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web search NEUTRAL — 3 days ago · Elon Musk takes Microsoft and OpenAI's Sam Altman to trial on Monday. Witnesses include Satya Nadella, Shivon Zilis, Mira Murati, and Greg Brockman.
https://www.businessinsider.com/openai-trial-witnesess-who-w…
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“Jared Birchall, who manages Musk's family office and is an executive at xAI and Neuralink, is also set to testify Thursday.”
CORROBORATED
Two independent web search results report that Jared Birchall is scheduled to testify on Thursday, and both sources provide details about his professional roles (managing Musk's family office, working at xAI and Neuralink).
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web search NEUTRAL — Jared John Birchall (born 1974) is an American business executive and a former banker. He is the chief executive officer of neurotechnology company Neuralink and the wealth manager of businessman Elon…
https://en.wikipedia.org/wiki/Jared_Birchall
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web search NEUTRAL — 15 hours ago · Jared Birchall, who manages Musk's family office and is also an executive at xAI and Neuralink, will be next to testify.
https://www.cnbc.com/2026/04/29/musk-altman-live-updates-day…
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web search NEUTRAL — 14 hours ago · Musk returns Thursday for another round of adversarial questioning. Also expected to testify are his family office manager, Jared Birchall; AI safety expert Stuart Russell; and OpenAI p…
https://techcrunch.com/2026/04/29/on-the-stand-elon-musk-can…
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“Musk and OpenAI lawyer William Savitt sparred on Wednesday in a cross-examination that was heated.”
CORROBORATED
Multiple web search results from different news sources (New York Post, general updates) confirm that Elon Musk and William Savitt, OpenAI's lawyer, had a heated cross-examination on Wednesday.
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wikipedia NEUTRAL — William Savitt (born 1964) is an American lawyer and lecturer in law. Savitt is a partner at the law firm Wachtell, Lipton, Rosen & Katz. He has played a significant role in several high-profile legal…
https://en.wikipedia.org/wiki/William_Savitt
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wikipedia NEUTRAL — Elon Musk initiated an acquisition of the American social media company Twitter, Inc. on April 14, 2022, and concluded it on October 27, 2022. Musk had begun buying shares of the company in January 20…
https://en.wikipedia.org/wiki/Acquisition_of_Twitter_by_Elon…
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web search NEUTRAL — Elon Musk sparred with an attorney for OpenAI and Sam Altman during his cross examination on Wednesday - with Musk hitting back repeatedly at the attorney William Savitt's yes or no line of ...
https://nypost.com/2026/04/29/business/musk-and-openais-lawy…
+ 2 more evidence sources
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“Musk said he lost trust in Sam Altman by late 2022, around the time of Microsoft's $10 billion investment in OpenAI, which was a tipping point.”
SINGLE SOURCE
While multiple sources discuss Musk's lawsuit and the $10 billion investment, the specific claim that he lost trust in Sam Altman *by late 2022* specifically due to the timing of the $10 billion investment is not directly corroborated by two independent sources. The evidence mentions the investment and Musk's reaction to it, but the precise timeline and causal link stated in the claim is limited to the provided web search context.
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wikipedia NEUTRAL — Samuel Harris Altman (born April 22, 1985) is an American entrepreneur who has been the chief executive officer (CEO) of the AI company OpenAI since 2019. Altman attended Stanford University for two y…
https://en.wikipedia.org/wiki/Sam_Altman
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wikipedia NEUTRAL — OpenAI Global, LLC is an American artificial intelligence (AI) research organization consisting of a for-profit public benefit corporation (PBC) and a nonprofit foundation, headquartered in San Franci…
https://en.wikipedia.org/wiki/OpenAI
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wikipedia NEUTRAL — On November 17, 2023, OpenAI's board of directors ousted co-founder and chief executive Sam Altman. In an official post on the company's website, it was stated that "the board no longer has confidence…
https://en.wikipedia.org/wiki/Removal_of_Sam_Altman_from_Ope…
+ 3 more evidence sources
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“Elon Musk will conclude his testimony on Thursday as the trial in his lawsuit against OpenAI CEO Sam Altman rolls into its fourth day.”
CORROBORATED
Multiple web search results confirm that Musk's testimony is scheduled to conclude on Thursday, and that this is part of the ongoing high-stakes trial against OpenAI. The sources frame this as the conclusion or a major day of the testimony.
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wikipedia NEUTRAL — GPT-5 is a multimodal large language model developed by OpenAI and the fifth in its series of generative pre-trained transformer (GPT) foundation models. Preceded in the series by GPT-4, it was launch…
https://en.wikipedia.org/wiki/GPT-5
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wikipedia NEUTRAL — This article lists notable open letters that were initiated by scientists or other academics or have a substantial share of academic signees. Open letters that are not open for signing by other academ…
https://en.wikipedia.org/wiki/List_of_open_letters_by_academ…
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wikipedia NEUTRAL — Elon Musk has been actively involved in politics, particularly in the United States and Europe, throughout the majority of his business career. Despite historically donating to and voting for both Dem…
https://en.wikipedia.org/wiki/Political_activities_of_Elon_M…
+ 3 more evidence sources
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“OpenAI's attorney, William Savitt, cross-examined Musk for several hours on Wednesday, and the two men clashed repeatedly.”
CORROBORATED
Multiple web search results from different news sources (OpenAI lawsuit updates, New York Post) confirm that William Savitt cross-examined Musk for several hours on Wednesday and that the exchange was contentious.
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web search NEUTRAL — Musk and OpenAI's lawyer, William Savitt, butted heads early in the cross-examination. Savitt repeatedly asked Musk not to stray from the direct, narrow questions he is asking.
https://www.cnbc.com/2026/04/29/musk-altman-live-updates-day…
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web search NEUTRAL — Elon Musk sparred with an attorney for OpenAI and Sam Altman during his cross examination on Wednesday - with Musk hitting back repeatedly at the attorney William Savitt's yes or no line of ...
https://nypost.com/2026/04/29/business/musk-and-openais-lawy…
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web search NEUTRAL — Elon Musk speaking during his cross examination by OpenAI attorney William Savitt with OpenAI CEO Sam Altman watching on during the trial at a federal courthouse in Oakland, California. PHOTO: REUTERS
https://www.straitstimes.com/world/united-states/elon-musk-a…
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“Musk accused Savitt of lying and asking misleading questions that were "designed to trick" him.”
CORROBORATED
Multiple web search results from different news sources (OpenAI lawsuit updates, general updates) confirm that Musk accused William Savitt of lying and asking misleading questions during the cross-examination.
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wikipedia NEUTRAL — Elon Musk initiated an acquisition of the American social media company Twitter, Inc. on April 14, 2022, and concluded it on October 27, 2022. Musk had begun buying shares of the company in January 20…
https://en.wikipedia.org/wiki/Acquisition_of_Twitter_by_Elon…
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wikipedia NEUTRAL — William Savitt (born 1964) is an American lawyer and lecturer in law. Savitt is a partner at the law firm Wachtell, Lipton, Rosen & Katz. He has played a significant role in several high-profile legal…
https://en.wikipedia.org/wiki/William_Savitt
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web search NEUTRAL — 15 hours ago · During his cross-examination, Musk clashed with Savitt on several occasions. He accused the attorney of lying and asking misleading questions.
https://www.cnbc.com/2026/04/29/musk-altman-live-updates-day…
+ 2 more evidence sources
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“His cross-examination is expected to last for another hour on Thursday.”
CORROBORATED
Multiple web search results (Reuters, Local News Matters) confirm that William Savitt was expected to cross-examine Musk for a specific duration (around an hour) on Thursday.
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web search NEUTRAL — Savitt is expected to cross-examine Musk for about an hour on Thursday, and a lawyer for Microsoft will also question him. The trial started on Monday and is expected to last several weeks.
https://www.channelnewsasia.com/business/elon-musk-return-wi…
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web search NEUTRAL — As OpenAI’s lead counsel, William Savitt, cross-examined Musk this morning, he unloaded a long string of questions that essentially had two aims. In pointed ways, Savitt hoped to raise questions about…
https://www.nytimes.com/live/2026/04/29/technology/openai-tr…
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web search NEUTRAL — Under cross-examination by William Savitt, the lead lawyer for Altman, Brockman and OpenAI, Musk answered the questions in a clear and confident — at times wary — voice. He sparred with Savitt, someti…
https://localnewsmatters.org/2026/04/29/musk-v-altman-day-3-…
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“Musk sued OpenAI, Altman, and Greg Brockman, the company's president, in 2024, alleging that they went back on their commitments to keep the artificial intelligence company a nonprofit and to follow its charitable mission.”
INSUFFICIENT EVIDENCE
Although the claim describes the general nature of the lawsuit (Musk suing OpenAI/Altman/Brockman in 2024), the provided evidence sections for this specific claim are empty. Therefore, based only on the evidence provided, the claim cannot be verified or corroborated.
help
“He claims that the roughly $38 million he donated to seed OpenAI, a company he co-founded, was used for unauthorized commercial purposes.”
INSUFFICIENT EVIDENCE
The claim details a specific monetary amount ($38 million) and its alleged use. However, the evidence provided for this claim is empty. Therefore, based only on the evidence provided, the claim cannot be verified or corroborated.
schedule
“Once Musk is done testifying on Thursday, his attorneys will call Jared Birchall, who manages Musk's billions at his family office, as their next witness.”
PENDING
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“Brockman and Stuart Russell, a computer science professor at the University of California, Berkeley, could also be called to the stand.”
PENDING
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“Judge Yvonne Gonzalez Rogers is overseeing the proceedings from federal court in Oakland, California”
PENDING
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“CNBC's reporters are covering Thursday's proceedings from the courtroom, as well as from CNBC's bureaus in San Francisco and Englewood Cliffs, New Jersey.”
PENDING
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.