OpenAI has told SpaceX that it intends to wind down the contract through which Cursor receives OpenAI models. The proposed shutoff date is 12 November 2026, and OpenAI says it is giving the maximum notice allowed by the agreement.[1]
That wording matters. This is a contractual notice and a proposed date, not an announcement that Cursor is closing.[1][2]
OpenAI says it wants developers to retain access to its models through Cursor for as long as the contract permits.[1]
What OpenAI announced
OpenAI published its decision on 28 August 2026.[1]
It said the agreement with Cursor contains a limited period in which it can cancel the contract after a change of control, and that it would use the latest cancellation date available under that provision.[1]
Reuters, in a report carried by The Star, said SpaceX announced an all-stock deal for Anysphere, the company behind Cursor, in June and completed the acquisition earlier in August.[2]
Cursor’s own company page gives a narrower subject-controlled account: “Cursor has officially been acquired by SpaceX.” It says the acquisition process began in April with a partnership involving SpaceXAI.[3]
The sources therefore establish a sequence of reported milestones: an acquisition, an OpenAI notice, and a proposed end date.[1][2][3]
The sources reviewed here do not disclose the contract itself, its complete change-of-control language, or the commercial terms governing the integration.[1][2]
The stated reason is OpenAI’s position
OpenAI says it cannot be confident that SpaceX will use its technology within OpenAI’s terms of service.[1]
The company links that judgement to what it describes as earlier contract violations by companies associated with Musk.[1]
That is an explanation from one party to the contract.[1] It is not an independent finding that SpaceX or Cursor has breached this particular agreement.[1][2]
Reuters reported that Musk responded on X and that Michael Truell, a Cursor co-founder who is now a SpaceX executive, said the company was speaking with OpenAI to resolve the issue.[2]
The public record reviewed for this article therefore shows a dispute over confidence, contractual control and future access.[1][2]
It does not establish the legal outcome of the contract dispute or a technical failure in Cursor’s software.[1][2]
OpenAI also says that it will not provide future models to Cursor while it waits for the contract to end.[1]
The statement does not specify which existing model versions will remain available, or whether the two companies will agree a different arrangement before November.[1]
What the current product record shows
Cursor’s homepage, checked on 29 August 2026, says users can choose among models from OpenAI, Anthropic, Gemini, SpaceXAI and Cursor.[4]
This is a current statement on Cursor’s own site, not an independent audit of account-level availability.[4]
It is also not a guarantee about what will be selectable on 12 November. It does, however, provide useful counter-context to a simple reading in which the OpenAI notice has already removed OpenAI models from Cursor.[1][4]
Cursor’s acquisition announcement says the company expects access to SpaceX computing resources and plans to build more capable models at lower cost.[3]
That is Cursor’s own forward-looking account, not an independent assessment of performance, pricing or availability.[3]
The practical issue for developers is supplier dependence. Cursor’s model choices are part of a service configuration that can change when ownership or provider agreements change.[1][3][4]
Developers who rely on a named OpenAI model should record the model, plan and workflow they use, then check Cursor’s transition communications before the proposed date. This is risk-management advice based on the announced dependency, not a forecast about Cursor’s internal roadmap.[1][2]
Reuters also reported that Anthropic planned to increase compute to support Claude models in Cursor, according to Tom Brown, one of Anthropic’s co-founders.[2]
That is a reported plan, not a guarantee that every Cursor user will receive an equivalent replacement or that pricing, limits and performance will remain unchanged.[2]
Three dates, three different meanings
OpenAI published its notice on 28 August.[1]
Cursor’s own site dates its acquisition announcement to 14 August and says the acquisition process began earlier.[3][4]
Reuters reported that the acquisition was completed earlier in August.[2]
OpenAI proposed 12 November as the date for the contract wind-down.[1][2]
These milestones should not be compressed into a claim that Cursor has already lost access to OpenAI models. The public evidence instead shows a notice period, current model-list language on Cursor’s site, and an unresolved future transition.[1][2][4]
The cleanest reading is narrower: OpenAI has announced an intended contractual wind-down after a change of control, has stated a reason based on its confidence in SpaceX’s compliance, and has proposed 12 November 2026 as the end date for that wind-down.[1][2]
The outcome of the reported discussions, the exact contract terms, model-by-model continuity and any formal change to the proposed date remain unknown.[1][2]
Sources
[1] OpenAI: Our decision on Cursor following its acquisition by SpaceX
[2] The Star / Reuters: OpenAI to cut off AI models for SpaceX-owned Cursor
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