Half of xAI's founding team exits as Elon Musk calls departures necessary reorganization

Reviewed byNidhi Govil

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Six of xAI's 12 co-founders have now left Elon Musk's AI company, with at least 11 engineers departing in recent days. Musk frames the exits as strategic reorganization for scale, but the departures come amid regulatory scrutiny over Grok AI's content issues and a pending IPO following the SpaceX merger.

Wave of Departures Hits xAI as Half Its Founding Team Exits

Elon Musk's xAI is experiencing significant executive departures, with half of xAI's founding team having left the company in recent months. Co-founder Tony Wu abruptly announced his resignation late Monday night, followed less than 24 hours later by fellow co-founder Jimmy Ba on Tuesday afternoon

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. The exits mean that six of the original 12 co-founders have now departed Elon Musk's AI company, with five of those departures occurring within just the last year.

Source: ET

Source: ET

At least 11 engineers, including the two co-founders, publicly announced their departure from xAI in the past week alone, though two of those xAI exits appear to have occurred a few weeks earlier

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. The senior engineers exit xAI amid what several departing employees describe as a desire for more autonomy and smaller teams. Wu, who served as reasoning lead, wrote in his resignation post that "a small team armed with AIs can move mountains and redefine what's possible," hinting at the appeal of working at a smaller scale.

Musk Frames Exits as Strategic Push, Not Pull

At an all-hands meeting Tuesday night, Elon Musk addressed the wave of departures, suggesting the xAI exits were about fit rather than performance. "Because we've reached a certain scale, we're organizing the company to be more effective at this scale," he told employees, according to The New York Times

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. On X Wednesday afternoon, Musk went further, making clear these weren't voluntary departures. "xAI was reorganized a few days ago to improve speed of execution," he wrote, adding that the reorganization "unfortunately required parting ways with some people."

Source: Analytics Insight

Source: Analytics Insight

The company reportedly had 1,200 employees as of March 2025, including AI engineers and those focused on the X social network, plus 900 employees serving as "AI tutors"—though roughly 500 of those were laid off in September. Despite maintaining a headcount of over 1,000 employees, the rapid pace of recent departures raises questions about internal tensions and whether the exits reflect deeper issues beyond routine attrition

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Pattern of Co-Founder Departures Intensifies Scrutiny

The xAI founding team has steadily shrunk since the company's 2023 founding. Infrastructure lead Kyle Kosic left for OpenAI in mid-2024, followed by Google veteran Christian Szegedy in February 2025

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. Igor Babuschkin departed in August to start his own AI safety-focused venture capital firm, and Microsoft alum Greg Yang stepped back last month citing complications from chronic Lyme disease.

Other recent high-profile departures include general counsel Robert Keele, communications executives Dave Heinzinger and John Stoll, head of product engineering Haofei Wang, and CFO Mike Liberatore, who left for a role at OpenAI after just 102 days of what he described as "120+ hour weeks". Three of the departing staff members have indicated they will start something new alongside other former xAI engineers, though no details about the new venture are available

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Regulatory Scrutiny and Controversy Cloud Departures

The departures come at a moment of significant regulatory scrutiny for xAI. The company faces investigation after Grok AI created nonconsensual explicit deepfakes of women and children that were disseminated on X, leading to an investigation by California's attorney general and a police raid of the company's Paris offices

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. French authorities raided X offices last week as part of their investigation into the Grok content issues.

Source: France 24

Source: France 24

The timing coincides with major structural changes at the company. Elon Musk recently merged xAI with SpaceX, a move he says will enable orbiting data centers and "scaling to make a sentient sun to understand the Universe." However, some observers view the SpaceX merger as financial engineering, combining xAI's nearly $1 billion annual losses with SpaceX's roughly $8 billion in annual profits into a more IPO-ready entity. Musk had previously rolled X into a unified entity with xAI in March, when X was valued at $33 billion—25 percent less than Musk paid for the social network in 2022.

Implications for AI Talent Competition and Future Stability

In frontier AI, where AI talent is scarce and reputation matters, xAI's ability to attract and retain top researchers will be tested as it competes with OpenAI, Anthropic, and Google

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. The stakes are high as xAI moves toward a planned IPO later this year, and the pressure to make good on ambitious plans for orbital data centers will be intense

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The pace of model development isn't slowing down, and if Grok can't keep pace with the latest models from competitors, the IPO could suffer

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. While Musk frames the reorganization as calculated and necessary for scaling, the fact that several engineers followed the co-founders out the door—and that at least three are starting something new together—suggests the departures may reflect deeper internal tensions beyond routine churn at AI startups

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. The rapid exodus has taken on a life of its own online, with users jokingly announcing they too are "leaving xAI" despite never having worked there, illustrating how quickly the narrative snowballed on Musk's own social network.

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