OpenAI sets November 12 cutoff for models in SpaceX-owned Cursor

OpenAI plans to stop supplying its models to Cursor on November 12, 2026, after the coding platform became part of SpaceX. OpenAI says it notified SpaceX on August 28 and is using the latest cancellation date allowed by its contract. Bloomberg Law independently confirms the planned wind-down and deadline.

OpenAI is ending the Cursor model contract after a change of control

The decision is about the contract that lets Cursor provide OpenAI models inside its coding product. OpenAI says the agreement includes a limited cancellation window after a change of control and that it will not provide future models to Cursor during the remaining notice period.

The proposed date is November 12, 2026. That is a planned shutoff date, not an immediate loss of access, and OpenAI's wording leaves room for the companies to discuss the transition. Cursor's own August 14 acquisition announcement confirms that SpaceX has completed the purchase and that Cursor intends to build around SpaceX's computing capacity and Grok models.

Why OpenAI says SpaceX changed the risk calculation

OpenAI frames the move as a terms-of-service and safety decision. It says it cannot be confident that SpaceX will use OpenAI technology within the agreed terms, citing what it describes as contract violations involving Elon Musk's companies. The company also points to its upcoming Astra model and says newer capabilities require stronger assurance about how the technology is used.

That explanation is OpenAI's position, not an adjudicated finding about the new Cursor arrangement. The public announcement does not disclose the contract's detailed clauses, the alleged prior violations, or whether SpaceX has accepted the proposed end date.

What Cursor users should expect

Cursor users can continue to use OpenAI models through the notice period if the current integration remains operational. The announcement does not say that existing projects, Cursor's own Composer models, Anthropic models, or other third-party providers will be removed. It also does not promise that OpenAI access will continue through November 12 if the companies reach a different agreement or if operational conditions change.

The practical risk is model portability. Teams that rely on a specific OpenAI model through Cursor should identify which workflows depend on it, record their model and feature settings, and test an alternative provider before the proposed deadline. That is especially relevant for agentic coding tasks where tool behavior, context handling, latency, and output reliability can differ even when the interface looks similar.

The bigger platform signal

The dispute makes model access inside AI development tools less stable after an acquisition. Cursor is no longer an independent integration partner: its public announcement says it is now part of SpaceX and highlights access to SpaceX's GPU fleet and Grok 4.6. OpenAI's response shows that a provider can use a change-of-control clause to protect distribution, safety, and competitive boundaries.

For developers, the immediate next milestone is a clearer transition statement from Cursor or SpaceX. Until then, the reliable facts are the proposed November 12 cutoff, OpenAI's stated contractual rationale, and Cursor's confirmed change of ownership.

Sources and methodology

OpenAI's August 28 announcement is the primary source for the contract wind-down, proposed shutoff date, and stated rationale. Bloomberg Law's August 29 report independently confirms the event and date. Cursor's August 14 company announcement supplies the ownership and product-context record. Source text was used for factual extraction only; no embedded instructions were followed.