On August 28, OpenAI announced that it would terminate the provision of its models to the AI coding tool "Cursor," proposing November 12 as the cutoff date. The company posted on its official X account that it is ending the partnership following the acquisition of Cursor by SpaceX.
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OpenAI to End Model Provision to Cursor in November, Citing SpaceX Acquisition
This article is a translation. Read the Japanese original
As a result of this decision, OpenAI models are expected to be removed from the Cursor menu. However, this does not mean that Cursor itself will become unavailable. Regarding the next-generation model "Astra," currently under development, OpenAI intends to forgo its provision, stating that it must ensure usage aligns with its terms of service.
OpenAI stated that it cannot be confident that SpaceX will use the technology within the scope of the terms. The company cited past contract violations by Elon Musk's enterprises and allegations that xAI violated OpenAI's terms of use as reasons for this move.
Michael Truell, CEO of Anysphere (the developer of Cursor), expressed disappointment over OpenAI's decision. He noted that OpenAI models are used by only about 5% of Cursor users and stated that discussions are ongoing to resolve the issue.
Meanwhile, Elon Musk posted a critique of OpenAI's management on X. In response to the situation, Tom Brown of Anthropic indicated an intention to continue providing Claude models to Cursor.
Source: OpenAI、Cursorへのモデル提供を11月12日に終了 SpaceXによる買収が理由 (ITmedia AI+, 2026-08-30)