Cursor co-founder and CEO Michael Truell has publicly responded to OpenAI's plan to cut off access to its models. OpenAI notified Cursor that it will block Cursor users from accessing OpenAI models in three months. Truell said OpenAI models currently make up roughly 5% of Cursor's user traffic and that Cursor is negotiating with OpenAI to resolve the issue. He also noted Cursor has been one of OpenAI's earliest customers and has long trusted OpenAI to act as "neutral infrastructure." The strained relationship comes after SpaceX completed a $60 billion acquisition of Cursor, with OpenAI ending the near four-year partnership two weeks later. New models will not be integrated into Cursor, and direct supply of existing models is set to end Nov. 12, 2026. The contract reportedly allows OpenAI to exit after the acquisition. OpenAI directly blamed Elon Musk, alleging that Twitter violated its contract after Musk bought it and that Musk admitted in court this year that xAI misused OpenAI's models.
Cursor co-founder and CEO Michael Truell said in a post that OpenAI has notified Cursor it will block Cursor users from accessing OpenAI models in three months. Truell added that OpenAI models currently account for about 5% of Cursor's user traffic, and Cursor is in talks with OpenAI to resolve the issue.
Truell described Cursor as one of OpenAI's earliest customers, with a partnership spanning years. Cursor has always trusted OpenAI to serve as "neutral infrastructure" for its business, he said. The development lands as Cursor faces intensifying competition in AI coding tools and pressure from model suppliers building their own applications.
Earlier reports said SpaceX closed a $60 billion acquisition of Cursor, and two weeks later OpenAI announced the end of the nearly four-year partnership. Going forward, new models will no longer be integrated into Cursor, and direct supply of existing models is scheduled to stop on Nov. 12, 2026. The contract between the parties reportedly allows OpenAI to terminate after Cursor was acquired.
OpenAI also directly blamed Elon Musk, saying Twitter breached its contract with OpenAI after Musk acquired it, and that Musk admitted in court this year that xAI had improperly used OpenAI's models.
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