OpenAI mentioned Friday it’ll wind down its partnership with Cursor, the favored AI coding device now owned by SpaceX, marking the newest escalation within the long-running dispute between OpenAI CEO Sam Altman and Elon Musk.
In a company blog post, OpenAI mentioned it notified SpaceX of its intent to finish the contract, proposing a shutoff date of Nov. 12, 2026 — the utmost discover window allowed beneath the settlement.
OpenAI framed the choice as a matter of belief. The corporate mentioned it couldn’t be assured that SpaceX would use its expertise in accordance with OpenAI’s phrases of service, citing what it described as a sample of Musk’s firms violating contracts. Particularly, OpenAI’s put up alleged that X breached the phrases of its personal contract with OpenAI after Musk’s acquisition, and famous that Musk had admitted beneath oath earlier this yr that xAI had additionally violated OpenAI’s phrases of service.
OpenAI added that its customized settlement with Cursor solely gave it a restricted window to cancel following a change of possession, and mentioned it needed to protect as a lot entry as attainable for builders within the meantime, calling the selection “extremely powerful” given how extensively it desires its fashions used.
SpaceX accomplished its acquisition of Anysphere, the startup behind Cursor, earlier this month, following a deal announced in June.
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Responding on X, Musk wrote that he “could not care much less,” whereas calling Altman and OpenAI president Greg Brockman “untrustworthy” and repeating his long-standing declare that the pair “stole an open supply nonprofit.” Michael Truell, Cursor’s co-founder and now a SpaceX government, struck a extra conciliatory tone, saying on X that the corporate was in talks with OpenAI’s workforce to attempt to resolve the difficulty.
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For the reason that announcement, OpenAI competitor Anthropic — which has an ongoing partnership with SpaceX — mentioned it would increase compute support for its Claude fashions inside Cursor.
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That is solely the newest chapter in a feud that has simmered for years. Musk sued OpenAI and Altman for $150 billion over the company’s shift from its nonprofit roots; a federal jury dominated towards him earlier this yr, discovering he’d filed too late.
The battle has additionally performed out repeatedly on social media, as Mashable has reported. Altman reposted allegations that Musk’s firms didn’t protect key paperwork throughout discovery, then turned Musk’s personal catchphrase again on him: “Regarding!” He later mentioned he was “actually excited” to depose Musk, calling it “Christmas in April.”
Disclosure: Ziff Davis, Mashable’s mother or father firm, in April 2025 filed a lawsuit towards OpenAI, alleging it infringed Ziff Davis copyrights in coaching and working its AI techniques.
