OpenAI plans to stop providing its models to Cursor, an AI-powered code editor that is now owned by Elon Musk's SpaceX following its acquisition of Anysphere, the tool's parent company. The decision marks a further escalation in the dispute between Musk and OpenAI CEO Sam Altman.

OpenAI justified the move by citing concerns that SpaceX would not use its technology in accordance with the terms of their agreement, pointing to previous experience with Musk's companies. It proposed ending the provision of its models on 12 November 2026.

Musk responded that he did not care about the decision, calling both Altman and OpenAI President Greg Brockman untrustworthy. Their long-running conflict culminated this year in a lawsuit over Musk's $150bn claim, in which a federal jury ruled against him.

Cursor co-founder Michael Truell said the company is in talks with OpenAI to resolve the situation. Meanwhile, rival firm Anthropic plans to increase its computing capacity to support its Claude models in Cursor.

In June, SpaceX agreed to acquire Anysphere for $60bn, completing the deal this month.

(Reuters, bak)