OpenAI intends to cease supplying its models directly to Cursor following SpaceX’s acquisition of the platform, demonstrating that competition in the AI market is increasingly centring not only on the models themselves, but also on access to them.
The company has proposed ending the partnership on 12 November 2026, citing a clause allowing the contract to be terminated following a change of control over the partner. OpenAI explains the decision by citing uncertainty as to whether SpaceX will comply with the terms of use for the technology.
SpaceX finalised the acquisition of Anysphere, the maker of Cursor, on 14 August. The all-share deal valued the company at $60 billion and integrated one of the most popular AI programming platforms into the AI ecosystem being developed by SpaceX.
The impact on Cursor itself, however, may be limited. The company’s co-founder, Michael Truell, stated that OpenAI models account for around 5 per cent of the platform’s user traffic. At the same time, Anthropic announced an increase in the computing power allocated to the Claude models running on Cursor.
Importantly, OpenAI is not disappearing from Cursor entirely. Users will still be able to access its models via their own API keys or the Codex extension.
The dispute is therefore primarily of strategic significance. It demonstrates that, as the market consolidates, model providers may treat access to their technology as a competitive advantage. For platforms built on multiple third-party models, this means that diversifying suppliers is becoming increasingly important, and – in the case of technology acquisitions – so too are clauses regarding changes in control within contracts.
