OpenAI notified SpaceX on August 28 that it will stop supplying its models to Cursor, proposing a November 12 shutoff and no new releases to the tool before then. SpaceX’s $60B purchase of Cursor parent Anysphere, which closed August 14, opened a limited cancellation window in the two companies’ custom agreement. OpenAI says it can’t be confident SpaceX will stay within its terms of service, pointing to X breaching its contract after Musk bought Twitter and to Musk’s testimony this year conceding that xAI violated them too. Cursor CEO Michael Truell said on X that OpenAI models handle about 5% of Cursor traffic and that the two sides are talking. Musk replied that he couldn’t care less, calling Altman and Greg Brockman “untrustworthy assholes who stole an open source nonprofit.”
