OpenAI will terminate its contract with AI coding tool Cursor on November 12, 2026, following Cursor’s acquisition by SpaceX. OpenAI says the ownership change triggered a contract clause and that it no longer trusts Elon Musk’s companies to follow its terms of service.
The cutoff does not remove every route to GPT models. Developers will still be able to connect their own OpenAI API keys to Cursor, and OpenAI says its IDE extensions will continue to work in the editor. Cursor co-founder Michael Truell said OpenAI models represent only about 5% of the product’s AI traffic and that the companies are discussing a possible solution.
OpenAI framed the decision as specific to Musk rather than a retreat from supplying independent coding tools. It pointed to earlier disputes involving Twitter data access and alleged use of other labs’ model outputs for training. The move also shows how quickly a change in ownership can alter access to the proprietary models on which software products depend. Anthropic has already said it will expand Claude capacity for Cursor, although Anthropic has also cut off partners during past acquisition disputes. For Cursor users, the practical effects will depend on whether the company replaces that capacity before the November deadline.