OpenAI has answered Elon Musk’s lawsuit with a detailed public rebuttal, setting out its account of the company’s early funding, internal disagreements and changing strategy for artificial general intelligence.
The Microsoft-backed startup says it intends to dismiss all claims in the case. Its response also frames the dispute as a clash over how OpenAI should fund the enormous computing demands of AGI while keeping its stated mission focused on humanity-wide benefit.
What OpenAI Says Musk Contributed
In a blog post attributed to Greg Brockman, Ilya Sutskever, John Schulman, Sam Altman, Wojciech Zaremba and OpenAI, the company said Musk provided less than $45 million after OpenAI was founded in 2015.
That figure matters because OpenAI says Musk had initially committed to provide as much as $1 billion in funding. The company also said it raised more than $90 million from other donors to support its research work.
OpenAI’s point is not only financial. The company is also trying to challenge the idea that Musk’s role should determine its current direction. By emphasizing the gap between the initial funding commitment and the amount it says was ultimately contributed, OpenAI is arguing that its later growth and success cannot be reduced to Musk’s early involvement.
The dispute arrives with OpenAI described as the most valuable AI startup, with a valuation of over $80 billion. Its release of ChatGPT in late 2022 helped trigger an intense AI race, putting the company’s structure, incentives and mission under unusually high scrutiny.
The Lawsuit’s Core Claim
Musk sued Altman, Brockman, OpenAI and other affiliates last week. His complaint argues that the ChatGPT-maker broke its original contractual commitments by pursuing profit instead of the nonprofit mission under which it was founded.
According to Musk’s lawsuit, OpenAI was created to develop AI that benefits humanity and to serve as a counterweight to Google. He also argued that the founding agreement required OpenAI to make its technology “freely available” to the public.
OpenAI’s reply rejects that framing. The company says its mission remains to ensure AGI benefits all of humanity, and it links that mission to building safe and beneficial AGI while promoting broad access to its tools.
The disagreement is important because both sides are using the original mission to support very different conclusions. Musk presents the move toward profit as a departure. OpenAI presents the move as a funding necessity tied to the scale of compute required for AGI.
Why The For-Profit Shift Became A Flashpoint
OpenAI says the need for a new structure became clear as the company understood the level of computational resources required to develop AGI. In its account, the annual costs would be in the billions of dollars.
That realization, OpenAI says, made a for-profit structure essential to secure the resources needed to continue. The company’s response places this moment at the center of the breakdown between Musk and the other co-founders.
OpenAI says that when the for-profit structure was discussed, Musk wanted one of two outcomes: a merger with Tesla or full control. The company also says Musk later left OpenAI, arguing that a relevant competitor to Google/DeepMind was needed and that he would build it himself.
OpenAI’s post included five email exchanges between Musk and OpenAI executives. In one part of the company’s account, OpenAI wrote that Musk forwarded an email in early February 2018 suggesting OpenAI should “attach to Tesla as its cash cow,” and that he commented Tesla was “the only path that could even hope to hold a candle to Google.”
Those details are central to OpenAI’s defense in public. The company is not merely saying that it chose a different path. It is saying Musk had his own preferred path for OpenAI, involving Tesla or control, and that the current conflict followed OpenAI’s decision to continue without him.
The Open Source Dispute
Another major issue is whether OpenAI abandoned an open approach. Musk’s lawsuit argues that OpenAI moved away from the principle that its technology should be available to the public.
OpenAI counters that Musk understood the mission did not require open-sourcing AGI. The company’s post says Ilya told Musk that, as the organization moved closer to building AI, it would make sense to become less open. Musk’s response, according to OpenAI, was: “Yup.”
This distinction is narrow but consequential. OpenAI is drawing a line between access to the benefits of AI and disclosure of the underlying science. In the company’s account, the “Open” in OpenAI referred to everyone benefiting from AI after it is built, not necessarily to sharing all technical work as AGI progress accelerated.
OpenAI also says its technology is already being used in places including Kenya and India to empower people and improve daily life. That claim supports the company’s broader argument that its current path is still connected to public benefit, even if it no longer matches Musk’s view of openness.
Why The Fight Matters
The lawsuit is more than a personal dispute between Musk and OpenAI’s leadership. OpenAI’s position in the AI industry, its relationship with Microsoft and the impact of ChatGPT mean the outcome could influence how major AI organizations think about funding, access and control.
At stake is a practical question: how can a company pursue AGI research that may require billions of dollars a year while staying aligned with a mission that claims to benefit humanity broadly?
OpenAI’s answer is that scale required a different structure and that Musk knew openness would become more limited as AGI came closer. Musk’s lawsuit argues that the shift betrayed the original bargain.
For now, OpenAI is trying to frame the case as a dispute over control and strategy rather than a simple question of mission drift. Its public response says Musk inspired the team, then predicted failure, started a competitor and sued after OpenAI made meaningful progress without him.
The legal process will determine what happens to Musk’s claims. But the public argument already makes clear that the future of OpenAI is tied not only to AI capability, but also to who gets to define the mission behind it.