OpenAI Co-Founder Says He Feared Musk Would Hit Him

Brockman Testifies About Tense Musk Confrontation

OpenAI president Greg Brockman took the stand during the second week of the landmark trial between Elon Musk and OpenAI CEO Sam Altman, delivering explosive testimony that included a startling admission: 'I thought he was going to hit me.' The statement, referring to a heated encounter with Musk, sent ripples through the courtroom and the broader tech industry, adding a dramatic personal dimension to what is already one of the most consequential legal battles in artificial intelligence history.

The trial, which is expected to span roughly a month, pits Musk — who co-founded OpenAI and provided early funding — against the organization he helped create. At its core, the dispute centers on whether OpenAI betrayed its original nonprofit mission by pivoting toward a capped-profit structure and forging a massive partnership with Microsoft, valued at over $13 billion.

Key Takeaways From the Testimony

• Physical intimidation alleged: Brockman described a moment where he believed Musk was on the verge of physically striking him during a disagreement about OpenAI's strategic direction.
• Founding tensions resurface: The testimony reveals deep fractures between Musk and OpenAI's leadership that predate the formal legal dispute by years.
• Nonprofit vs. profit debate: The trial continues to center on whether OpenAI's transition to a capped-profit entity violated commitments made to its co-founders and early supporters.
• Musk's controlling behavior: Brockman's account paints a picture of Musk as a domineering figure who sought outsized influence over OpenAI's trajectory.
• Industry-wide implications: The outcome of this trial could reshape how AI companies structure themselves and manage relationships with founding investors.
• Witness credibility battle: Both sides are presenting starkly different narratives, making witness testimony like Brockman's pivotal to the jury's understanding.

Inside the Courtroom: Brockman's Account of the Encounter

Brockman's testimony provided a vivid and deeply personal account of the tensions that simmered within OpenAI's founding team. According to his courtroom statements, the confrontation with Musk occurred during a period of intense debate over the organization's future — specifically, whether OpenAI should remain a purely nonprofit research lab or adopt a structure that could attract the billions of dollars needed to compete in the rapidly evolving AI arms race.

The moment Brockman described was not a public blowup but rather a private interaction that left a lasting impression. 'I thought he was going to hit me,' Brockman told the court, describing Musk's demeanor as aggressive and physically imposing during the disagreement.

This kind of personal testimony adds a layer of human drama to a case that has largely been framed in terms of corporate governance, contractual obligations, and intellectual property. It suggests that the split between Musk and OpenAI was not merely philosophical but deeply emotional and interpersonal.

The Origins of the Musk-OpenAI Rift

To understand why Brockman's testimony matters, it helps to revisit the history of OpenAI's founding. Musk co-founded the organization in 2015 alongside Altman, Brockman, and several other prominent figures in AI research. The original vision was clear: build artificial general intelligence (AGI) safely and ensure its benefits are distributed broadly, all under a nonprofit umbrella.

Musk contributed approximately $50 million to OpenAI in its early years, making him one of the most significant financial backers of the project. However, he departed the board in 2018, citing potential conflicts of interest with Tesla's own AI initiatives. At the time, the departure appeared amicable.

The relationship soured dramatically in 2019 when OpenAI created a capped-profit subsidiary, OpenAI LP, designed to attract the massive capital investment required to train increasingly large language models. This structural shift eventually led to the partnership with Microsoft, which has invested over $13 billion and integrated OpenAI's technology — most notably GPT-4 and ChatGPT — across its product ecosystem.

Musk has argued that this transformation represents a fundamental betrayal of OpenAI's founding principles. His lawsuit seeks to either unwind the for-profit transition or secure financial compensation for what he characterizes as a bait-and-switch.

What Musk's Legal Team Is Arguing

Musk's attorneys have consistently framed the case around a central narrative: OpenAI was founded as a nonprofit dedicated to the safe and open development of AI, and its leadership — primarily Altman — orchestrated a self-serving pivot to enrich themselves and their corporate partners.

Key elements of Musk's legal argument include:

• Breach of founding agreement: Musk contends there was an understanding, if not a formal contract, that OpenAI would remain nonprofit and open-source.
• Unjust enrichment: The lawsuit alleges that Altman and other executives have personally benefited from a structure that was never part of the original plan.
• Microsoft's outsized influence: Musk's team argues that the Microsoft partnership effectively gives a single corporation control over potentially transformative AI technology.
• Safety concerns: Musk has long positioned himself as a voice for AI safety, and his legal team frames the profit motive as inherently at odds with responsible AI development.

Musk's legal team has also pointed to internal communications — emails and messages between founders — to support the claim that OpenAI's leadership knowingly deviated from its mission.

OpenAI's Defense: Pragmatism Over Purity

OpenAI's legal team has mounted a robust defense, arguing that the transition to a capped-profit model was not a betrayal but a practical necessity. Training frontier AI models like GPT-4o and the recently released o3 reasoning model requires billions of dollars in compute infrastructure — costs that no nonprofit structure could sustainably bear.

Altman and other OpenAI leaders have testified that Musk himself was aware of and, at times, supportive of exploring alternative structures. They argue that Musk's lawsuit is motivated not by genuine concern for OpenAI's mission but by competitive frustration, particularly as his own AI venture, xAI, competes directly with OpenAI in the large language model space.

xAI, which Musk founded in 2023, has raised approximately $6 billion and developed Grok, a chatbot integrated into the X platform (formerly Twitter). The competitive dynamic between xAI and OpenAI adds a significant wrinkle to Musk's claims of altruistic concern.

Brockman's testimony appears designed, in part, to humanize the conflict from OpenAI's perspective — showing that the founders endured real personal strain in their interactions with Musk long before the legal dispute materialized.

Industry Context: Why This Trial Matters Beyond the Courtroom

The Musk vs. OpenAI trial is not just a dispute between billionaires and tech executives. It has the potential to set significant precedents for the AI industry at large.

First, the case raises fundamental questions about nonprofit-to-profit conversions in the tech sector. OpenAI is not the only organization that has struggled with the tension between mission-driven research and the capital demands of cutting-edge AI. Anthropic, another leading AI lab founded by former OpenAI researchers, adopted a public benefit corporation structure from the outset — arguably learning from OpenAI's governance challenges.

Second, the trial is playing out against the backdrop of an intensifying AI arms race. Google, Meta, Microsoft, Amazon, and a growing number of startups are all pouring tens of billions of dollars into AI development. The question of how founding commitments hold up under the pressure of competition and capital is relevant to every AI company navigating similar structural decisions.

Third, the case is drawing public attention to the governance of AI safety. Both Musk and OpenAI claim to prioritize safety, but they disagree profoundly on what responsible AI development looks like in practice.

What This Means for the AI Ecosystem

For developers, businesses, and users who rely on OpenAI's products — from the ChatGPT API to enterprise deployments via Microsoft Azure — the trial introduces a degree of uncertainty. While the day-to-day operations of OpenAI are unlikely to be disrupted in the short term, a ruling in Musk's favor could force significant structural changes.

Practical implications to watch:

• API stability: Developers building on OpenAI's models should monitor the trial for any signals about potential governance changes that could affect product roadmaps.
• Investment confidence: Venture capital flowing into AI startups could be influenced by how the court interprets nonprofit-to-profit transitions.
• Open-source dynamics: If the court rules that OpenAI had obligations to remain open-source, it could embolden advocates pushing for greater transparency across the industry.
• Corporate partnerships: The Microsoft-OpenAI relationship, one of the most consequential in tech, could face new scrutiny depending on the verdict.

Looking Ahead: What Comes Next in the Trial

The trial is expected to continue for several more weeks, with additional witnesses from both sides. Key figures who may still testify include other OpenAI board members, Microsoft executives, and potentially Musk himself. Each round of testimony has the potential to introduce new revelations — internal emails, strategic documents, or personal accounts — that reshape public understanding of the dispute.

Brockman's dramatic testimony sets a high bar for the emotional intensity of the proceedings. Whether the jury ultimately views his account as evidence of Musk's overreach or as a sympathetic but ultimately irrelevant anecdote will depend on how it fits into the broader evidentiary picture.

One thing is certain: the outcome of this trial will reverberate far beyond the courtroom. It will influence how AI companies are founded, funded, and governed for years to come. In an industry moving at breakneck speed, the legal system is now being asked to adjudicate questions that the tech world itself has struggled to answer — questions about mission, money, and the meaning of commitments made at the dawn of the AI era.