OpenAI to End Partnership with Cursor Following SpaceX Acquisition

In a significant shift, OpenAI has revealed plans to end its provision of AI models to the Cursor editor, with the cutoff date projected for November 12, 2026. This decision follows Cursor's acquisition by SpaceX for $60 billion on August 14, which raised concerns about adherence to licensing requirements.

In light of Cursor's acquisition by SpaceX, we will halt direct access to our models by November 12, 2026. We understand this impacts developers relying on our models in Cursor.

— OpenAI (@OpenAI) August 29, 2026

OpenAI's apprehension stems from previous experiences with Elon Musk's ventures, including X, where they allege unmet contractual obligations. Although Cursor will lose direct access to future OpenAI models, current users can still utilize these models through their API, the Codex extension, or other third-party services.

Implications of the Separation

Despite the termination, Cursor co-founder Michael Truell has indicated that OpenAI models account for about 5% of the platform’s traffic. The collaboration has lasted nearly four years, and discussions are ongoing to address the implications of this separation.

In a related development, Anthropic's infrastructure director, Tom Brown, has stated that the company will enhance support for its Claude models within Cursor, as they look forward to future collaboration with SpaceX.

We’re excited to continue our partnership with Cursor, further increasing resources for Claude models.

— Tom Brown (@NotTomBrown) August 29, 2026