OpenAI Is Cutting Cursor Off From Its Models After the SpaceX Takeover
OpenAI has told SpaceX it will stop supplying its models to the coding tool Cursor on November 12, citing Elon Musk's record of breaking contracts. Here is what changes for developers.
Two weeks after SpaceX bought the AI coding tool Cursor, OpenAI has decided to stop selling it models. In a short public note, OpenAI said it notified SpaceX that it intends to wind down the contract that supplies OpenAI models to Cursor, with a proposed shutoff date of November 12, 2026. The reason it gives is blunt: it “cannot be confident that SpaceX will use our technology within our terms of service, based on our experience with Elon Musk’s companies violating contracts.”
OpenAI points to two specific incidents. After Musk acquired Twitter, now part of SpaceX, the company broke the terms of an OpenAI contract. And earlier this year, under oath, Musk admitted that xAI, also now part of SpaceX, had violated OpenAI’s terms of service. The custom agreement with Cursor included a change of control clause, which gave OpenAI a limited window to cancel after the acquisition. OpenAI says it chose the latest possible cancellation date within that window, so developers keep access as long as the contract allows, while no future models go to Cursor. The company also mentions its upcoming model, Astra, and says advancing capabilities bring “a new level of accountability” about who gets to run them.
Cursor co-founder Michael Truell has played the move down, saying OpenAI models account for around five percent of the tool’s AI traffic.
What’s actually going on here: almost every AI product you use is a thin layer over somebody else’s model. Cursor is an editor for writing code with AI help, and it routes your requests to models from OpenAI, Anthropic, Google and others. That works beautifully until the model provider decides it no longer wants you as a customer. There is no neutral utility here, no equivalent of an electricity grid that has to serve everyone. Access is a commercial contract, and contracts have termination clauses. The Musk feud is the headline, but the structural point is older and matters more: if your daily workflow depends on one company’s model reaching you through another company’s app, two sets of business decisions sit between you and your tool.
What this means for you: if you use Cursor, nothing breaks today, and probably nothing breaks in November either. Cursor still supports Anthropic, Google and other providers, and you can plug in your own OpenAI API key to keep using GPT models directly. OpenAI also says it will keep offering access through its own IDE extensions. If you are just getting started with AI coding tools, treat this as a useful habit rather than a crisis: pick tools that let you swap the model behind them, and know how to switch. If you run a small team on one specific model, this is a good week to check whether your setup survives that model becoming unavailable. It is a fair caveat that we only have one side of the story here, since SpaceX has not published a detailed response.
Sources
Source: https://openai.com/index/our-decision-on-cursor-following-its-acquisition-by-spacex/
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