OpenAI will stop supplying Cursor with GPT models on November 12. CEO Michael Truell said those models are about 5 percent of traffic and the companies are still talking. Anthropic co-founder Tom Brown said Cursor has been a partner since Sonnet 3.5 and Anthropic will keep adding Claude compute. Bundled GPT ends. A bring-your-own API key and the Codex IDE extension still work for local Chat and Agent. They do not cover Tab, Auto, Cloud Agents, Automations, the CLI, or Cursor's API and SDK.
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Cursor CEO Michael Truell said OpenAI models are about 5 percent of Cursor user traffic and the companies are talking. Anthropic co-founder Tom Brown said Cursor has been a trusted partner since Sonnet 3.5 and Anthropic will keep increasing Claude compute. The proposed shutoff is November 12.
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On r/cursor, users treated Truell's 5 percent line as a boast that OpenAI is not that relevant to Cursor. Commenter u/zuliani19 called it a concerned note that still said OpenAI does not matter much. Commenter u/ajwin said OpenAI is making itself less relevant. Users there are treating the cut as survivable.
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Tom Brown said Anthropic will put more Claude compute into SpaceX-owned Cursor. On r/cursor, u/Glittering_Night7681 said there is a close compute partnership with SpaceX and no plausible scenario Anthropic follows OpenAI. Anthropic is adding supply.
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OpenAI says the transition is proposed through November 12. The official date is still TBD. A bring-your-own OpenAI API key and the Codex IDE extension still work for local Chat and Agent. They do not cover Tab, Auto, Cloud or Background Agents, Automations, the CLI, or Cursor's API and SDK. Bundled GPT ends. This is what remains.
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Reuters confirmed Anthropic will increase Claude compute. Elon Musk said he could not care less. Truell said Cursor is still talking.