OpenAI is cutting off Cursor after SpaceX bought it

What's this about?

SpaceX bought Cursor for $60B two weeks ago. OpenAI has now told SpaceX it intends to wind down the contract that supplies OpenAI models to Cursor, with a proposed shutoff of November 12, 2026. It is the maximum notice the contract allows — but OpenAI has stopped shipping *new* models to Cursor immediately. The stated reason is blunt: "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."

What is a "change of control" clause?

A term in a commercial contract that gives one side the right to walk away if the other side is acquired. It exists because you sign a deal with a company, its management and its incentives — and an acquisition can replace all three overnight. Here it gave OpenAI a limited window to cancel after the SpaceX purchase, and OpenAI used it while choosing the latest date the window permitted, which is the difference between cutting developers off and giving them two and a half months.

What's the community saying?

1. The dominant reaction is that this barely hurts Cursor. Multiple heavy users say they never used OpenAI models in Cursor at all, and the circulating estimate is that OpenAI accounted for around 5% of Cursor usage.
2. The reason given: Cursor's own models (Composer, now grok-cursor) are competitive and come with generous limits, and Claude models carry most of the rest.
3. Cursor emailed customers saying it is "speaking with the OpenAI team to resolve this" and will keep offering ways to access all models — Cursor currently supports bring-your-own OpenAI key, though whether that survives, and whether new OpenAI models would even be selectable, is unclear.
4. A commercially-minded reading: OpenAI is likely still subsidising inference, and sees no value in that subsidy being buried inside a competitor's branded tool.
5. A dissenting data point from a heavy user who switched to OpenAI models in Cursor six months ago because Claude felt slow, and is surprised the usage share is so low.