OpenAI plans to terminate its model-access agreement with Cursor, the AI coding startup recently acquired by SpaceX for $60 billion. OpenAI cited concerns over contract enforcement and past contract violations by Elon Musk’s companies, setting a proposed shutoff date of November 12, 2026.
OpenAI notified SpaceX of its intention to wind down the commercial agreement that supplies OpenAI models to Cursor, according to official statements released by OpenAI. SpaceX finalized its all-stock acquisition of Anysphere, the startup behind Cursor, earlier this month following a deal announced in June valued at $60 billion, as detailed by Reuters reporting.
OpenAI Cites Contract Breaches and Legal History
According to coverage from Latestly, the termination stems directly from safety compliance and contract enforcement concerns under SpaceX ownership. OpenAI stated it cannot be confident that SpaceX will use its technology within our terms of service, based on our experience with Elon Musk’s companies violating contracts.
The AI developer pointed to past disputes, noting that after Musk acquired Twitter, now X, and part of the SpaceX ecosystem, the company broke the terms of its contract alongside many others. OpenAI also noted that under oath earlier this year, Musk admitted that xAI, now also part of SpaceX, had violated OpenAI’s terms of service.
“We are making this choice because we cannot be confident that SpaceX will use our technology within our terms of service, based on our experience with Elon Musk’s companies violating contracts.”
OpenAI, official blog post
The longstanding legal friction between Altman and Musk includes a high-stakes federal lawsuit where Musk sued OpenAI for $150 billion, accusing the company and Altman of stealing a charity
by betraying its original nonprofit mission for their own enrichment. A federal jury ruled against Musk earlier this year, finding that he had filed the case too late. During the trial, Musk’s lawyer said that Musk and other witnesses had testified that Altman was a liar, while OpenAI argued that Musk had sought control of the company.
Timeline and Developer Impact of the Shutoff
The custom agreement between Cursor and OpenAI gives a limited time window to cancel it after a change of control. OpenAI invoked this clause to set a shutoff date of November 12, 2026, providing the maximum notice period required by the contract to maximize the time that developers can retain access to our models through Cursor.
While developers relying on OpenAI models within Cursor face an eventual cutoff, OpenAI confirmed it will not provide future models to Cursor, including its upcoming model, Astra. OpenAI stated that this decision was incredibly tough, as we care deeply about our models being broadly available for developers, adding that we know that the people most affected by this decision are the developers who rely on OpenAI models in Cursor.
Michael Truell, a co-founder of Cursor and now an executive at SpaceX, addressed the development in a public post on X on Friday, emphasizing the long history between the two teams and stating that they were speaking with the OpenAI team to resolve this issue.
“Cursor was one of the very first users of OpenAI, we’ve worked closely with their team for years, and we’ve trusted their platform to be neutral infrastructure for our business.”
Michael Truell, Co-founder of Cursor and Executive at SpaceX
Truell added that they have worked with Cursor for nearly four years and have enormous respect for their team, their product, and what they’ve built for the developer community.
SpaceX Infrastructure Integration and Alternative Models
The acquisition brings Cursor into an expansive AI infrastructure setup, following months of collaboration between the two companies on AI model training and infrastructure. The strategic partnership initially formed in April gave Cursor access to xAI’s Colossus infrastructure to expand its training capacity, addressing previous computing resource bottlenecks during model training when Cursor had been limited by a lack of computing resources.
SpaceX and Cursor announced the acquisition through an all-stock transaction, bringing a prominent competitor to Anthropic’s Claude Code and OpenAI’s Codex under its growing artificial intelligence business. The companies said they have spent the past several months jointly training an AI model that will be released through Cursor and Grok Build, while also focusing on training their own low cost, frontier coding models such as Grok 4.6 and the Composer series.
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