OpenAI to end agreement with SpaceX's AI coding tool Cursor, deepening Musk-Altman clash

"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 said in a blog post.

Michael Truell, ⁠a co-founder of Cursor and now an executive at SpaceX, said that they were speaking with ​the OpenAI team to resolve this issue.

"Cursor was one of the very first users of OpenAI, ​we’ve worked closely with their team for years, and we’ve trusted their platform to be neutral infrastructure for our business," Truell said in an X post on Friday. Musk and Altman have been at odds for years, ​a feud that culminated in a trial.

During the trial, Musk's lawyer said that Musk and ​other witnesses had testified that Altman was a liar, while OpenAI argued that Musk had sought control of the company.‌Musk, ⁠the world's richest person, had sued OpenAI for $150 billion, accusing the company and Altman of "stealing a charity" by betraying its original nonprofit mission for their own enrichment.

A federal jury ruled against Musk earlier this year, finding that he had filed the case too late. In its blog post, OpenAI said ​that X, formerly known ​as Twitter and now ⁠part of SpaceX, had breached the terms of its contract with OpenAI after Musk acquired the platform.

"To work with a large partner like SpaceX, ​we typically rely on custom contracts to ensure compliance with our terms ​of service and ⁠that the integration provides for safety at scale," the AI company added.

The ChatGPT-maker said it proposed a shutoff date of November 12, 2026, adding that its agreement with Cursor gave it a limited time ⁠window ​to cancel the contract following "a change of control. "Now the challengers are coming from every direction.

Cursor offers Grok ​models developed with SpaceXAI among its first-party models, while also allowing users to access frontier models from OpenAI, Anthropic and ​Google,.