OpenAI Ends Cursor Partnership, Cites SpaceX Terms of Service Risk
OpenAI is cutting off a four-year partnership rather than trust SpaceX with its terms of service, citing a contract violation after X came under SpaceX following Musk's acquisition.
Reporting from 1 source: GIGAZINE.
OpenAI announced it is ending its partnership with AI coding tool Cursor, with model provision ending November 12, 2026. The decision follows SpaceX's acquisition of Cursor in August 2026. OpenAI cited past precedents where companies led by Elon Musk failed to honor contracts, saying it cannot be confident SpaceX will keep use of its technology within the terms of service. OpenAI said the decision was difficult because it wants AI models widely used by developers. It will support developers during the transition period.
The two companies had been partners for four years, but the relationship ends after SpaceX officially completed its acquisition of Cursor in August 2026. OpenAI requires assurance of compliance with its terms of service from major partners and signs individual contracts to ensure safety even with large-scale integration.
According to OpenAI, a contract violation occurred after X (formerly Twitter) came under SpaceX following Musk's acquisition. Musk himself acknowledged this in early 2026. OpenAI said it has great respect for the work built for Cursor's team, products, and developer community, and understands developers relying on OpenAI's models within Cursor will be most affected.
OpenAI's Thibault Sottiaux said developers' OpenAI API keys will remain usable during the transition, and access through IDE extensions for Cursor will also be provided until November 12, 2026.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.