OpenAI winds down Cursor model contract

OpenAI is ending the custom deal that feeds its models into Cursor, with a proposed cutoff of 12 November 2026. The trigger is SpaceX buying the coding startup, not a claim that Cursor itself broke the rules.

The company laid out the decision in a post. Cursor's custom agreement gives OpenAI a limited window to cancel after a change of control, and OpenAI is using it. The two sides say they are still talking, so 12 November is a notice date, not a settled outcome.

SpaceX completed its acquisition of Cursor on 14 August, reported by Bloomberg and CNBC at roughly $60 billion in all-stock terms. 12 November is the maximum notice the contract allows, so OpenAI is giving the longest runway it can rather than cutting access on short order.

OpenAI also said its next model, Astra, will not be supplied to Cursor at all, per The Next Web. What is ending is a model-supply relationship. Cursor keeps running, and OpenAI is not exiting coding tools.

The rationale sat in one sentence: "We are making this choice because 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." OpenAI cited two episodes. After Musk acquired Twitter, now part of SpaceX, that company broke OpenAI's terms. Under oath earlier this year, Musk admitted xAI, also now part of SpaceX, had violated them.

OpenAI does not accuse Cursor itself of any breach. The concern is the compliance record of the SpaceX and Musk group that now owns it. OpenAI kept the tone respectful toward the Cursor team and said it is "ready to go above and beyond to support developers moving off."

Everyone answered, and none of it is a settlement yet. Cursor co-founder Michael Truell said on X the company is speaking with OpenAI to resolve the decision, and put OpenAI models at about 5% of Cursor traffic. Anthropic said it will increase compute support for Claude models inside Cursor, positioning itself to absorb the workloads OpenAI is dropping. Musk, for his part, replied that he "couldn't care less," per Reuters.

The 5% traffic figure says most of Cursor survives this untouched. The narrower question is whether the specific features that lean on OpenAI models get re-routed to Anthropic or another provider before the cutoff, or whether a deal reopens access. Absent a reinstatement notice or a signed carve-out, the shutoff date is the one on the calendar.

Some offers on this page may be paid placements or contain affiliate links.