OpenAI has notified SpaceX that it intends to wind down its OpenAI Cursor contract providing OpenAI models to the platform, following SpaceX’s acquisition of the AI coding platform. OpenAI has proposed November 12, 2026, as the transition date and said it is giving the maximum notice allowed under its agreement to keep its models available to developers for as long as possible. However, the date is currently a proposed transition period rather than a final confirmed termination date. The decision does not mean Cursor itself is shutting down. Instead, it concerns the direct availability of OpenAI models through Cursor’s own platform.
OpenAI Cursor: Why OpenAI Is Ending the Cursor Agreement
OpenAI said it made the decision because it cannot be confident that SpaceX will use its technology within OpenAI’s terms of service. The company pointed to its previous experiences with companies controlled by Elon Musk, including its claim that Twitter violated the terms of an earlier contract after Musk acquired the platform. OpenAI also referred to Musk’s admission under oath earlier this year that xAI had violated OpenAI’s terms of service. OpenAI said its agreements with large partners typically include customised contractual terms designed to ensure compliance and support safety when its technology is integrated at scale.
SpaceX Acquisition Changed Cursor’s Ownership
The decision follows SpaceX’s acquisition of Anysphere, the company behind Cursor. Cursor confirmed earlier this month that it had officially become part of SpaceX, saying the deal would give the company access to SpaceX’s large-scale computing infrastructure and allow it to develop more capable AI models. OpenAI’s agreement with Cursor includes a provision allowing it to cancel the contract within a limited period following a change in control. The acquisition therefore allowed OpenAI to reconsider the arrangement. OpenAI said it decided to use that provision while keeping the contract active until the latest date permitted under the agreement.
Future OpenAI Models Will Not Come to Cursor
While existing OpenAI models are expected to remain available during the proposed transition period, OpenAI said it will not provide future models to Cursor. The company specifically cited its upcoming model Astra, saying that its increased responsibility around newer AI capabilities requires it to ensure that such models are used according to its terms. This means the change is not limited to the eventual removal of the current OpenAI models. If the agreement ends as proposed, Cursor would also lose direct access to future OpenAI model releases through its own model integration.
Cursor Says OpenAI Models Account for 5% of Traffic
Cursor co-founder Michael Truell has responded to the announcement, saying the company is continuing discussions with OpenAI. Truell said OpenAI models currently account for around 5% of Cursor’s traffic, suggesting that the platform’s broader AI services will continue even if the direct OpenAI agreement ends. Cursor is a multi-model platform, meaning developers can choose between models from different AI providers. The company has also developed its own models and continues to support alternatives from other providers.
What the Change Means for Cursor Users
For developers who specifically use OpenAI models through Cursor, the proposed change could eventually require them to switch to another model or use a different method to access OpenAI’s technology. OpenAI’s current guidance says developers can continue using OpenAI models inside Cursor through several alternatives. These include bringing their own OpenAI API key for supported local Chat and Agent features, using the Codex IDE extension with an eligible ChatGPT subscription or API key, or connecting through a compatible AI gateway provider. These alternatives do not provide identical access across every Cursor feature. OpenAI says its API-key option does not apply to Cursor Tab, Auto, Cloud or Background Agents, Automations, the Cursor CLI, or Cursor’s API and SDK.
Cursor Will Continue Operating
The end of the OpenAI agreement would not shut down Cursor or remove its other AI models. The platform will continue to operate under SpaceX ownership and can use models from other providers. Cursor’s acquisition announcement said the company plans to use SpaceX’s computing resources to develop stronger and more economical models. For users, the main change would therefore be the loss of direct OpenAI model access through Cursor’s own model integration, rather than the disappearance of the coding platform itself.
A New Challenge for AI Model Partnerships
The decision also highlights how ownership changes can affect agreements between AI companies and software platforms. Cursor had worked with OpenAI for nearly four years before the ownership change, according to OpenAI, but the acquisition by SpaceX triggered a contractual review. The situation also comes amid a broader rivalry between OpenAI CEO Sam Altman and Elon Musk, whose companies now operate across several overlapping areas of the AI industry. OpenAI’s decision shows that contractual and trust concerns can directly affect access to major AI models even when a platform itself continues operating.
Conclusion
OpenAI plans to wind down its agreement with Cursor following SpaceX’s acquisition of the company behind the AI coding platform. OpenAI has proposed November 12, 2026, as the transition date for ending direct access to its models, although the company says the final termination date will be confirmed between the two sides.
Cursor is expected to continue operating with other AI models, while developers who want to keep using OpenAI technology inside the platform have alternative options, including OpenAI’s Codex extension and supported API integrations. The development marks a significant change in the relationship between the two companies following Cursor’s move under SpaceX ownership