Reports: OpenAI reportedly ends Cursor's direct model access on November 12

• Cursor’s direct contract access to OpenAI models is proposed to end on November 12, 2026, following its acquisition by SpaceX, under OpenAI’s proposal.
• OpenAI grounds the termination in trust and compliance concerns, plus a custom agreement with a time-limited change-of-control clause, as described in OpenAI’s transition note.
• OpenAI says personal API keys and its IDE extensions for Cursor remain available through the routes listed in the transition note.
• OpenAI models represented about 5% of Cursor user traffic in testingcatalog’s report, while thsottiaux’s caveat argues that traffic is a poor proxy for revenue or task value.
• Claude remains in Cursor: Anthropic says it will keep supporting the integration and add compute capacity in Anthropic’s public commitment.

The full OpenAI statement says the company used the latest cancellation date available under its contract while withholding future models, and specifically names its upcoming Astra model. Kilo immediately used the dispute to pitch a coding tool separated from foundation-model ownership in Kilo’s response.

OpenAI describes November 12 as a proposed shutoff, not a cutoff already applied. A screenshot shared by thsottiaux quotes Cursor saying it is speaking with OpenAI to resolve the decision.

The mechanism is a custom agreement that gives OpenAI a limited window to cancel after a change of control. The official post cites a contract breach after Musk acquired Twitter and an under-oath xAI admission of OpenAI terms violations.

The company connects that record to its accountability for Astra and future models. kimmonismus read the disclosure as fundamentally about distillation, but OpenAI’s statement calls out terms violations without using that word.

A quoted Cursor post puts OpenAI models at about 5% of user traffic, as testingcatalog’s report and kimmonismus’s thread also describe. The public figure provides no breakdown of paid usage, revenue, or task outcomes.

Traffic is an especially awkward denominator across model families. In the same caveat, thsottiaux argues that frontier models can complete work with fewer tokens, while weaker models can inflate traffic by requiring more tokens for the same task.

Anthropic says Cursor has been a trusted partner since Sonnet 3.5 and that it will increase compute to support Claude models in the product. Yuchenj_UW contrasted that position with Anthropic’s earlier Windsurf cutoff during OpenAI acquisition reports, framing the two episodes as a recurring model-access pattern.

The transition note names three routes outside the direct Cursor contract:

• Personal OpenAI API keys.
• OpenAI’s IDE extensions for Cursor.
• Other open-source and closed-source tools and harnesses that OpenAI says it will continue to support.

ChatGPT subscription OAuth remains a separate public question. daniel_mac8 asked how the cutoff works for people authenticated through a ChatGPT subscription, and OpenAI’s transition note does not address that path.