OpenAI cuts off Cursor after SpaceX acquisition, citing Musk's history of breaking contracts
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OpenAI is ending its contract with AI coding tool Cursor after SpaceX acquired the company, citing Elon Musk's history of breaking contracts. The termination takes effect November 12, 2026, using a contract clause that allows exit after an ownership change. OpenAI says it cannot trust SpaceX to follow terms of service, pointing to Musk cutting off OpenAI's Twitter data access and using other labs' models to train Grok. OpenAI also frames the move as a safety issue, especially with its upcoming Astra model. Cursor co-founder Michael Truell responded that OpenAI models account for only about five percent of Cursor's AI traffic and that talks are ongoing. The article notes previous similar actions, including Anthropic cutting off OpenAI's API access in August 2025.
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