When exactly do OpenAI models stop working in Cursor?

OpenAI's proposal ends Cursor's direct access to OpenAI models on November 12, 2026. Until that date the models keep working as they do today, so anyone building on GPT models inside Cursor has roughly two and a half months to move a workflow to a different model or a different editor.

Does this affect Cursor users who never pick an OpenAI model?

OpenAI's decision covers only OpenAI's own models, not everything Cursor offers. Cursor co-founder Michael Truell says OpenAI models account for about 5% of Cursor's traffic, so the change touches a small share of what people actually run in the editor.

What did Elon Musk say about OpenAI dropping Cursor?

Musk answered the OpenAI decision on X with "I couldn't care less", and accused OpenAI's leadership of being untrustworthy. SpaceX, which he runs, now owns Cursor. Michael Truell took a different line, saying Cursor was speaking with the OpenAI team to try to resolve the issue.

Has SpaceX already completed the Cursor acquisition?

Yes. SpaceX completed its $60 billion all-stock purchase of Anysphere, the company behind Cursor, earlier in August 2026. The deal was first announced in June 2026. OpenAI's contract decision follows that close, and applies to Cursor as a SpaceX-owned product.

OpenAI · 2026-08-28 · major

OpenAI ends its Cursor deal — model access stops on November 12

OpenAI is ending the contract that supplies its models to Cursor after SpaceX bought Cursor maker Anysphere. Direct access stops on November 12, 2026. Cursor CEO Michael Truell says OpenAI models are about 5% of Cursor's traffic.

Reuters via The Star

OpenAI will stop supplying its models to Cursor on November 12, 2026, after SpaceX bought the coding tool.

Quick facts

Company	OpenAI
Affected product	Cursor, built by Anysphere
Access ends	November 12, 2026
Reason given	OpenAI cannot be confident SpaceX will stay within its terms of service
Cursor's exposure	About 5% of Cursor traffic uses OpenAI models
Cursor's response	Michael Truell says Cursor is talking with OpenAI
Cursor's owner	SpaceX, via a $60B all-stock deal closed in August 2026

What is it?

OpenAI has told SpaceX it will wind down the contract that lets Cursor serve OpenAI models, with a proposed shutoff on November 12, 2026. Cursor is the AI coding editor built by Anysphere, which SpaceX bought this month in a $60 billion all-stock deal. Until the shutoff date, nothing changes for people using GPT models in the editor.

How does it work?

The reason OpenAI gives is contract compliance rather than competition. OpenAI says it cannot be confident that SpaceX will use its technology within OpenAI's terms of service, and points to two earlier episodes: X breaking its OpenAI contract after Elon Musk took over the platform, and xAI admitting it violated those terms. Both companies are now part of SpaceX.

Why does it matter?

Anyone who reaches for a GPT model inside Cursor needs a plan before November 12. Michael Truell, Cursor's co-founder, says OpenAI models are roughly 5% of Cursor's traffic and that his team is talking with OpenAI to resolve the issue, so the practical hit is narrow but real. The wider signal is that model access through a reseller can now be revoked over who owns the reseller, not over how the product behaves.

Who is it for?

developers using OpenAI models inside Cursor

Frequently asked questions

When exactly do OpenAI models stop working in Cursor?: OpenAI's proposal ends Cursor's direct access to OpenAI models on November 12, 2026. Until that date the models keep working as they do today, so anyone building on GPT models inside Cursor has roughly two and a half months to move a workflow to a different model or a different editor.
Does this affect Cursor users who never pick an OpenAI model?: OpenAI's decision covers only OpenAI's own models, not everything Cursor offers. Cursor co-founder Michael Truell says OpenAI models account for about 5% of Cursor's traffic, so the change touches a small share of what people actually run in the editor.
What did Elon Musk say about OpenAI dropping Cursor?: Musk answered the OpenAI decision on X with "I couldn't care less", and accused OpenAI's leadership of being untrustworthy. SpaceX, which he runs, now owns Cursor. Michael Truell took a different line, saying Cursor was speaking with the OpenAI team to try to resolve the issue.
Has SpaceX already completed the Cursor acquisition?: Yes. SpaceX completed its $60 billion all-stock purchase of Anysphere, the company behind Cursor, earlier in August 2026. The deal was first announced in June 2026. OpenAI's contract decision follows that close, and applies to Cursor as a SpaceX-owned product.