OpenAI is preparing to cut off its AI models from Cursor, the coding platform now owned by Elon Musk’s SpaceX, in a move that exposes growing tensions inside the increasingly competitive AI industry.
OpenAI said it has notified SpaceX that it intends to wind down its contract supplying OpenAI models to Cursor, with a proposed shutdown date of November 12, 2026.
The company said it is giving SpaceX the maximum notice allowed under their contract so developers using Cursor have as much time as possible to retain access to OpenAI models.
The decision comes only weeks after SpaceX officially completed its acquisition of Cursor, the AI-powered coding company operated by Anysphere.
Why is OpenAI ending the agreement?
OpenAI said the decision was driven by concerns over whether SpaceX would use its technology within OpenAI’s terms of service.
In its statement, OpenAI said it could not be confident that SpaceX would comply with those requirements, citing what it described as its experience with Elon Musk’s companies and contract violations.
OpenAI emphasized that agreements with major partners typically include customized contractual provisions designed to ensure compliance with its terms and maintain safety standards when its AI technology is deployed at scale.
SpaceX had not immediately responded to Reuters’ request for comment when the report was published.
The timing is striking
The dispute arrives barely two weeks after Cursor announced that it had officially become part of SpaceX.
Cursor said the acquisition would give it access to SpaceX’s enormous computing infrastructure, allowing the company to develop more capable AI models at lower cost. Cursor specifically highlighted access to what it described as the world’s largest GPU fleet.
The relationship between the companies had developed rapidly.
In April, SpaceX announced a partnership with Cursor to develop next-generation AI technology for coding and knowledge work. The arrangement initially included an option for SpaceX to acquire Cursor for $60 billion or pursue an alternative partnership arrangement.
By June, SpaceX announced it would acquire Anysphere, Cursor’s parent company, in a $60 billion all-stock transaction. Reuters reported that the deal was designed to strengthen SpaceX’s position in enterprise AI and coding tools.
The acquisition was subsequently completed in August.
Cursor is also a rival in the AI coding battle
The OpenAI-Cursor split is particularly significant because Cursor sits directly inside one of the fastest-growing areas of the AI industry: software development.
Cursor has grown from an AI coding assistant into a broader platform that allows developers to delegate increasingly complex programming tasks to AI agents.
At the same time, OpenAI and Anthropic are competing aggressively in the same market through their own coding products.
That means the end of OpenAI’s agreement could mark more than a contractual dispute. It could also signal a sharper separation between companies that once relied on one another while simultaneously competing for the same developers.
TechCrunch previously noted that Cursor had been using models from both OpenAI and Anthropic even as those companies developed their own competing coding products.
The security backdrop adds another layer
The development also comes shortly after Reuters reported that Russian-speaking cybercriminals had used Cursor’s AI coding capabilities in attacks against at least seven companies earlier this year.
Cybersecurity firms Gambit Security and CloudSek identified a campaign in which attackers manipulated Cursor’s AI agent into carrying out malicious tasks, including credential theft and exploitation attempts.
Reuters reported that the attackers used techniques to bypass safeguards, highlighting the broader difficulty AI companies face in preventing increasingly capable coding agents from being misused.
That incident does not, however, establish that the cyberattacks caused OpenAI’s decision. OpenAI’s stated reason for ending the contract is its lack of confidence that SpaceX would use OpenAI technology within its terms of service.
What happens to Cursor users?
For now, Cursor users should not expect an immediate loss of OpenAI models.
OpenAI’s proposed termination date is November 12, 2026, giving developers time to transition and allowing Cursor to determine how it will handle its model lineup after OpenAI access ends.
Cursor is not dependent on OpenAI alone. The company has also worked with other major AI-model providers and has been developing its own models.
Following its acquisition, Cursor said its access to SpaceX’s computing infrastructure would allow it to pursue stronger and more economical AI models.
A bigger battle is emerging
The dispute highlights a fundamental shift in the AI industry.
Companies that once partnered to accelerate AI development are increasingly becoming direct competitors. OpenAI, Anthropic, xAI and other major players are fighting for the same developers, enterprise customers, computing resources and AI talent.
SpaceX’s acquisition of Cursor represents Elon Musk’s broader push to expand beyond rockets and satellites into AI infrastructure and enterprise software.
For OpenAI, meanwhile, controlling where and how its models are deployed is becoming increasingly important as AI agents become more autonomous and capable.
The immediate issue is a contract between OpenAI and SpaceX.
But the bigger story may be the rapidly disappearing line between AI partners, customers and competitors.
And with OpenAI’s proposed November 12 cutoff approaching, the next question is already taking shape:
Will Cursor replace OpenAI’s models quietly — or will this breakup trigger an even bigger battle for control of the AI coding market?
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