OpenAI announced it will terminate its partnership with AI coding platform Cursor, effective November 12, following SpaceX's acquisition of Cursor, citing trust concerns related to Elon Musk's companies. Cursor responded that OpenAI models account for only about 5% of its user traffic, downplaying the impact of the split. Anthropic subsequently announced it will continue increasing compute support for the Cursor platform. The development highlights the shifting alliances in the competitive AI coding market and the growing importance of multi-vendor model ecosystems in developer tools.





