OpenAI To Cut Cursor Model Access After SpaceX Acquisition
OpenAI plans to end Cursor’s access to its models on Nov. 12, 2026 after SpaceX acquired the AI coding startup, narrowing one model option for developers.
OpenAI will cut off Cursor’s access to its models after SpaceX acquired the AI coding startup, CNBC reported, turning a developer-tool partnership into another point of friction between OpenAI and Elon Musk’s companies.
The proposed shutoff date is Nov. 12, 2026.
OpenAI also plans to withhold future models from Cursor while it winds down the agreement, limiting one of the model options available inside a product built for AI-assisted software development.
OpenAI framed the decision as a terms-of-service risk tied to SpaceX ownership.
The company stated that it could not be confident SpaceX would use its technology within OpenAI’s rules, citing its experience with Musk-led companies and contract disputes.
Cursor chief executive Michael Truell pushed back on X, the SpaceX-owned social network.
OpenAI models account for about 5 percent of Cursor user traffic, and Cursor is speaking with OpenAI to resolve the dispute.
Truell called Cursor one of OpenAI’s earliest users and described the platform as infrastructure the startup had trusted to remain neutral.
The ownership change is the business event behind the access fight.
SpaceX completed its $60 billion acquisition of Cursor on Aug. 14, after earlier buying X and xAI before its public listing in June.
The cutoff extends the public clash between Musk and OpenAI leaders Sam Altman and Greg Brockman.
Musk co-founded and helped fund OpenAI as a nonprofit research lab in 2015, left the board in 2018, later sued the company and has argued that its restructuring violated its founding commitments.
OpenAI disputes those claims.
The Cursor decision also echoes an earlier supplier boundary in AI coding tools.
Anthropic blocked Windsurf access to Claude models last June, but Anthropic co-founder Tom Brown said Cursor remains a trusted partner and that Anthropic will increase compute support for Claude models inside Cursor.
For developers, the immediate effect is not a complete Cursor outage.
The dispute narrows OpenAI-backed model access inside Cursor and makes model-provider neutrality a competitive issue as AI coding tools, foundation-model suppliers and Musk-owned companies become more tightly connected.
