OpenAI said on Friday ‌that it plans to stop providing AI models to Cursor, the coding-tool company now owned by Elon Musk's SpaceX, marking a further escalation in the bitter rivalry between OpenAI CEO Sam Altman and Musk.

"We are making this choice because we cannot be confident that SpaceX will use our technology within our terms of service, based on our experience with Elon Musk's companies violating contracts," OpenAI said in a blog post.

Musk and Altman have been at odds for years, a feud that culminated earlier this year in a trial over Musk's $150 billion lawsuit against OpenAI.

Musk responded early on Saturday in an X post, writing, "I couldn't care less."

He accused Altman and OpenAI President Greg Brockman of being "untrustworthy," while repeating his assertion that they "stole an open source nonprofit."$SOL