· Venture Capital Tracker · investment-strategies · 4 min read
Is OpenAI Pulling Models From Cursor? Yes — Proposed Shutoff November 12
OpenAI said on August 28, 2026 that it will wind down the contract that supplies its models to Cursor after the SpaceX close. Proposed shutoff: November 12, 2026. The $60 billion acquisition price remains press. Cursor’s CEO said OpenAI is about 5% of user traffic.
OpenAI is winding down the contract that supplies its models to Cursor. The lab said on August 28, 2026 that it notified SpaceX and proposed a November 12, 2026 shutoff.
Unexpected truth: the acquisition already closed (Cursor, August 14). This is a change-of-control cancellation, not a broken sale. The $60 billion price is still press. Cursor’s CEO said OpenAI is about 5% of user traffic — his number, not OpenAI’s.
This page is for developers and investors who need the vendor fact with dates. Last verified August 29, 2026. Primary: OpenAI’s Cursor post. Close memo: SpaceX closed Cursor.
Five-minute decision
| If you need… | Verdict |
|---|---|
| Did the sale close? | Yes. Cursor blog, Aug 14, 2026. |
| Are OpenAI models gone today? | No. Proposed shutoff November 12, 2026. |
| Why OpenAI says it is leaving | ToS / change-of-control. Names X and xAI, both now in the SpaceX orbit. |
| Price of the acquisition | $60B all-stock is press. Not in Cursor’s close post. |
Investigate further when: you underwrite Cursor as a multi-model IDE and need to know which lab still ships into the editor.
Wait or pass when: you only needed a $60B recap — that figure did not become a company filing on August 28.
What happened
| Field | Detail |
|---|---|
| Who spoke | OpenAI (company post, Aug 28, 2026) |
| Counterparty | SpaceX, owner of Cursor / Anysphere |
| Action | Wind down the contract that provides OpenAI models to Cursor |
| Proposed shutoff | November 12, 2026 — OpenAI says this is the maximum notice in the contract |
| Legal hook | Custom Cursor agreement lets OpenAI cancel after a change of control |
| Stated reason | Cannot be confident SpaceX will stay inside OpenAI’s terms, “based on our experience with Elon Musk’s companies violating contracts” |
| Named precedents in the post | X (after the Twitter acquisition) broke a contract; Musk admitted under oath that xAI violated OpenAI terms (similar to xAI’s own) |
| Future models | OpenAI says it will not provide future models, including Astra, to Cursor |
| Acquisition status | Closed Aug 14 (Cursor). $60B remains CNBC / The Verge |
Cursor CEO Michael Truell said on August 29 that OpenAI models serve about 5% of Cursor user traffic and that the teams are speaking. Treat that as a founder social-media statement, not a filing.
Closed sale vs cancelled API — what differs
| Aug 14 close | Aug 28 OpenAI notice | |
|---|---|---|
| Status | Acquisition closed | Vendor contract proposed to end |
| Who published | Cursor | OpenAI |
| Date that matters | Aug 14, 2026 | Proposed Nov 12, 2026 shutoff |
| Money fact | Price not in the company close post | No new deal price |
| Product implication | Cursor is SpaceX-owned | OpenAI models have a dated off-ramp |
Most people will paste “OpenAI blocked Cursor.” The accurate line is: notice given, shutoff proposed for November 12, talks claimed by Cursor.
Why this is a live problem now
- Cursor’s close note sold SpaceX GPU capacity and Grok 4.6. An OpenAI off-ramp makes that Grok-first path less optional.
- OpenAI is also a competitor (Codex / ChatGPT coding). A change-of-control clause is how a lab exits a customer that just joined a rival conglomerate.
- Independent tools raised the same month — Lovable at $13.3B is still a standalone product. Cursor is not.
Prior investors on the sold company: a16z, Thrive, Coatue, Benchmark. This notice does not reopen that cap table.
Worked numbers (labeled)
- Setup: Truell’s 5% traffic line, if you take it at face value.
- Move: 95% of sessions already sit on other models or first-party / Grok paths.
- Punch: the diligence question is not “does Cursor die on November 12?” It is whether power users of that 5% churn — indicative, and only as good as the founder percentage.
When not to use this page
- Do not write that OpenAI already shut the models off. The dated clock is November 12, 2026.
- Do not treat $60B as newly confirmed. It is the same press figure as June / close day.
- Do not say the SpaceX acquisition failed. It closed August 14.
- Do not invent a replacement-vendor contract with Anthropic or Google. Neither company posted one in the OpenAI note.
Where to go next
Close memo: Did SpaceX buy Cursor?. Entities: Cursor, OpenAI, SpaceX. Independent alternative still private: Lovable. Month: August 2026 VC news. Directory: /directory.
Last updated:
Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.
