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OpenAI to cut off AI models for SpaceX-owned Cursor, escalating feud with Musk - Finance news and analysis from Global Banking & Finance Review
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OpenAI to cut off AI models for SpaceX-owned Cursor, escalating feud with Musk

Published by Global Banking & Finance Review

Posted on August 29, 2026

3 min read

· Last updated: August 29, 2026

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OpenAI Ends AI Model Support for SpaceX-Owned Cursor After Acquisition

OpenAI Withdraws AI Model Support Amidst Ongoing Rivalry with Elon Musk

By Anusha Shah and Shubham Kalia

Background of the OpenAI and SpaceX Dispute

Aug 28 (Reuters) - 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.

History of the Musk-Altman Feud

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. During the trial, Musk's lawyer said that Musk and other witnesses had testified that Altman was a liar, while OpenAI argued that Musk had sought control of the company.

OpenAI's Official Statement

"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.

Reactions from Elon Musk and Industry Stakeholders

Musk's Response on Social Media

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."

Legal Context and Jury Decision

Musk, the world's richest person, had sued OpenAI and Altman for "stealing a charity" by betraying the company's original nonprofit mission for their own enrichment. A federal jury ruled against Musk earlier this year, finding that he had filed the case too late.

Cursor and SpaceX's Response

However, Michael Truell, a co-founder of Cursor and now an executive at SpaceX, said on X that the company was speaking with the OpenAI team to resolve this issue.

Industry Impact and Future Implications

Anthropic Steps In

Hours after OpenAI's announcement, Anthropic, which rivals both firms but has an ongoing partnership with SpaceX, said it planned to increase compute to support Claude models in Cursor, according to Tom Brown, one of the co-founders of the firm.

Contractual Issues and Timeline

In its blog post, OpenAI said that X, formerly known as Twitter and now part of SpaceX, had breached the terms of its contract with OpenAI after Musk acquired the platform.

OpenAI's Approach to Large Partnerships

"To work with a large partner like SpaceX, we typically rely on custom contracts to ensure compliance with our terms of service and that the integration provides for safety at scale," the AI company added.

Shutoff Date and Contractual Clauses

The ChatGPT-maker said it proposed a shutoff date of November 12, 2026, adding that its agreement with Cursor gave it a limited time window to cancel the contract following "a change of control."

Details of the Acquisition

SpaceX announced a deal to buy Anysphere, the startup behind Cursor, for $60 billion in an all-stock deal in June, and completed the acquisition earlier this month.

(Reporting by Anusha Shah and Shubham Kalia in Bengaluru; Editing by William Mallard and Ros Russell)

Key Takeaways

  • OpenAI plans to end its contract supplying AI models to Cursor (acquired by SpaceX), setting November 12, 2026, as the shutdown date—the maximum notice allowed under the agreement (openai.com).
  • OpenAI stated it cannot trust that SpaceX will adhere to its terms of service, referencing prior violations by Musk’s companies, including Twitter (X) and xAI (openai.com).
  • SpaceX completed its $60 billion acquisition of Cursor (via Anysphere) earlier in August following a June announcement (investing.com).
  • Cursor’s co-founder Michael Truell confirmed they are in discussions with OpenAI to resolve the issue (reddit.com).
  • Anthropic said it would boost compute for Claude models in Cursor, stepping in to fill the gap amid the escalating conflict (reddit.com).

References

Frequently Asked Questions

Why is OpenAI terminating AI model support for Cursor?
OpenAI is ending support due to concerns that SpaceX will not use its technology within OpenAI's terms of service and due to prior contract violations by Elon Musk's companies.
What triggered the escalation between OpenAI and SpaceX over Cursor?
The feud escalated after SpaceX acquired Cursor, and longstanding disputes between Elon Musk and Sam Altman intensified after OpenAI decided to cut off Cursor's access to its AI models.
When will OpenAI cut off Cursor's access to its AI models?
OpenAI proposed a shutoff date of November 12, 2026, citing its agreement with Cursor allows such termination after a change of control.
What was the value of SpaceX's acquisition of Cursor?
SpaceX acquired Anysphere, the company behind Cursor, in an all-stock deal worth $60 billion.
How has Anthropic responded to OpenAI's termination of Cursor's AI support?
Anthropic announced plans to increase computing resources to support its Claude models in Cursor following OpenAI’s announcement.

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