OpenAI says it is ending its partnership with Cursor, the AI coding assistant, after SpaceX completes its $60 billion acquisition of Cursor’s parent, Anysphere. In multiple reports, OpenAI states it will stop supplying its models to Cursor, with access ending on November 12, 2026. OpenAI also says it is withdrawing or withholding additional future model access, including the upcoming Astra model, according to some outlets.

OpenAI links the decision to distrust of SpaceX and Elon Musk, citing what it describes as SpaceX companies violating OpenAI contract terms. Several sources add that OpenAI believes it cannot be confident SpaceX will use its technology within the agreed terms of service. Cursor disputes the impact, saying OpenAI models account for a small share of its usage (about 5% in one account) and that it is working to adjust. Other outlets note that Anthropic is adding compute for Claude in Cursor. Musk responds publicly, including saying he does not care about the move.

Across coverage, outlets vary mainly in emphasis: some frame it as an escalation in the long-running public dispute between Sam Altman and Musk, while others focus on the contractual rationale and the specific termination date for model access.