4 September 2026
OpenAI ends Cursor access after SpaceX acquisition
First reported
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- OpenAI said it will stop letting Cursor, a coding assistant tool, access its models starting November 12, citing SpaceX's ownership of the company.
- Anthropic, maker of the Claude chatbot, announced it will increase Claude's availability in Cursor instead, positioning itself as an alternative.
- The dispute signals that AI model makers are becoming more selective about which tools can use their technology, rather than staying neutral across platforms.
How it was covered
Sloth BytesThe Coding Sloth
OpenAI announced it will wind down model access in Cursor following SpaceX's acquisition, with shutoff proposed for November 12 and no future models including Astra. Anthropic's Tom Brown countered that they will continue growing Claude compute inside Cursor, signalling a shift from model-agnostic tools toward vendor lock-in where developers must choose sides.