OpenAI Will Cut Cursor Off From Its Models on November 12 After the SpaceX Takeover

OpenAI told SpaceX it will wind down the contract that supplies OpenAI models to Cursor, the coding tool built by Anysphere, and proposed November 12 as the shutdown date. The cause was a change in ownership. SpaceX agreed to buy Anysphere in an all-stock deal valuing it at $60 billion and closed the purchase on August 14, placing the company inside a new SpaceXAI division.

OpenAI's stated reason is contractual trust, not competition. The company said it cannot be confident SpaceX will use its technology within the terms of service, and it pointed to its experience with other companies controlled by Elon Musk, including an assertion that terms were broken after the Twitter acquisition. SpaceX has not published a detailed response, and the claim about past violations rests on OpenAI's account alone.

Whatever the motive, the practical effect is that a leading coding tool loses one of its model suppliers on a fixed date. Cursor routes work to several vendors, so the immediate question for its users is how much of their traffic currently runs on OpenAI models and what the alternatives cost. For OpenAI, giving up that volume is a revenue decision as well as a policy one, and it removes a distribution channel into professional developers at a moment when coding is the most competitive product category in the industry.

The move also shows what a model contract actually is. Access to frontier model weights is licensed, it can be revoked, and it is now visibly conditioned on who owns the company on the other side of the deal.