OpenAI Is Cutting Off Cursor's GPT Models on November 12 After SpaceX Acquired Anysphere

TL;DR: SpaceX acquired Cursor's parent Anysphere in mid-August; OpenAI invoked its change-of-control clause and will cut off direct GPT model access on November 12, 2026.

SpaceX finalized its acquisition of Anysphere — the company behind Cursor — in mid-August 2026. OpenAI announced on August 28 that it is winding down its contract and will terminate direct GPT model access to Cursor on November 12, the maximum contractual notice period.

OpenAI cited trust concerns. Its statement pointed to Musk's track record with contracts: the data cutoff after X's acquisition in 2022 and sworn testimony involving xAI training data. Cursor's co-founder Michael Truell responded that OpenAI accounts for just 5% of Cursor's AI traffic and that talks with OpenAI's team are ongoing.

What changes for engineers

• Direct model access (the embedded GPT models Cursor supplies to users) ends November 12.
• Your own OpenAI API key still works inside Cursor after that date — bring-your-own-key access is unaffected.
• OpenAI will continue providing models through its VS Code and IDE extensions.
• Anthropic's co-founder has signaled expanded Claude model capacity for Cursor, and Claude is the current plurality model across Cursor's traffic.

Why it matters: If your Cursor workflow depends on specific GPT-4-series models — o3, GPT-5, or proprietary Cursor-routed variants — test the Claude path now rather than scrambling in October. The November 12 deadline gives you ten weeks; the migration itself is typically a settings change, not a workflow rewrite.

The practical limit: the forced migration timeline assumes ongoing contract talks fail. If OpenAI and SpaceX/xAI reach an agreement, the cutoff date could change. Watch Cursor's changelog for updates.

Sources: OpenAI cuts off Cursor after SpaceX acquisition — The Decoder · OpenAI terminates contract with Cursor — Neowin · OpenAI to end model access to Cursor — CNBC · OpenAI will pull its models from Cursor — Engadget