--- title: OpenAI Broke Up With Cursor | daily.dev description: OpenAI is ending its partnership with Cursor after Cursor's acquisition by SpaceX, cutting off direct access to OpenAI models through Cursor on November 12,... canonical: https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAI Broke Up With Cursor | daily.dev og:description: OpenAI is ending its partnership with Cursor after Cursor's acquisition by SpaceX, cutting off direct access to OpenAI models through Cursor on November 12,... og:url: https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp og:image: https://api.daily.dev/og/posts/gIsQX1qWp.png og:image:alt: OpenAI Broke Up With Cursor og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenAI Broke Up With Cursor **[Theo - t3․gg](https://daily.dev/sources/t3dotgg)** · 27 min read · 1 upvotes · 0 comments ## Summary OpenAI is ending its partnership with Cursor after Cursor's acquisition by SpaceX, cutting off direct access to OpenAI models through Cursor on November 12, 2026. The move is framed as concern over data distillation risk given Elon Musk's history of pulling data from partner models to improve Grok, especially ahead of OpenAI's upcoming Astra model. Cursor users will still be able to use OpenAI models via personal API keys or IDE extensions, but lose native subscription access. The piece also covers the public spat between Cursor's Michael Truell and OpenAI's Tibor Blaho over token-efficiency stats, and recommends alternative unified coding tools (T3 Code, Superset, Herder) plus direct subscriptions to Claude Code or Codex for frontier model access. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### When will Cursor lose access to OpenAI models like GPT and Codex? OpenAI is winding down its contract providing OpenAI models to Cursor, with a proposed shut-off date of November 12, 2026, following Cursor's acquisition by SpaceX. Cursor users will still be able to use OpenAI models through their own OpenAI API key or through OpenAI's IDE extensions and Codex plugin inside Cursor, but native subscription-based access will end. _daily.dev helps developers track how AI coding tool integrations and access change over time._ ### Why is OpenAI cutting off Cursor's access to its models after the SpaceX acquisition? OpenAI says it cannot be confident SpaceX will use its technology within the terms of service, citing Elon Musk's history of violating contracts, including admitted distillation of OpenAI data for xAI. The concern intensifies around OpenAI's upcoming model, Astra, since Cursor's usage data could otherwise be used to improve Musk's Grok models through SpaceX ownership of Cursor. _following contract and access changes between AI labs and coding tools matters for anyone choosing where to build; daily.dev keeps developers current on shifts like the OpenAI-Cursor split._ ### How token-efficient is Claude Sonnet compared to GPT models in real agentic coding tasks? Claude models are notably more token-efficient than GPT models in agentic coding work: Sonnet used about 17k tokens per task versus 36k for GPT-5 (Fable) on the artificial analysis benchmark, and in Cursor's own benchmark Sonnet used 28k tokens per task versus roughly 103k for GPT-5 class models, over a 3x gap, even though GPT-5 scored higher (70.5% vs 67.2%). _developers weighing model cost and efficiency for coding agents can track these comparisons on daily.dev._ --- Tags: [#llm](https://daily.dev/tags/llm), [#openai](https://daily.dev/tags/openai), [#ai-coding](https://daily.dev/tags/ai-coding), [#anthropic](https://daily.dev/tags/anthropic) [View this post on daily.dev](https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"OpenAI Broke Up With Cursor","url":"https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp"},"datePublished":"2026-08-30T07:24:11.016Z","dateModified":"2026-08-30T17:09:31.203Z","description":"OpenAI is ending its partnership with Cursor after Cursor's acquisition by SpaceX, cutting off direct access to OpenAI models through Cursor on November 12,...","image":"https://i.ytimg.com/vi/jKCjLzjmiaA/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/jKCjLzjmiaA/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Theo - t3․gg","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Theo - t3․gg","logo":"https://media.daily.dev/image/upload/s--UmX7IyU3--/f_auto/v1704628081/logos/t3dotgg.jpg","url":"https://daily.dev/sources/t3dotgg"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"llm,openai,ai-coding,anthropic","timeRequired":"PT27M","video":{"@type":"VideoObject","name":"OpenAI Broke Up With Cursor","description":"OpenAI is ending its partnership with Cursor after Cursor's acquisition by SpaceX, cutting off direct access to OpenAI models through Cursor on November 12,...","thumbnailUrl":"https://i.ytimg.com/vi/jKCjLzjmiaA/sddefault.jpg","uploadDate":"2026-08-30T07:24:11.016Z","duration":"PT27M","url":"https://api.daily.dev/r/gIsQX1qWp","embedUrl":"https://www.youtube.com/embed/jKCjLzjmiaA"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Theo - t3․gg","item":"https://daily.dev/sources/t3dotgg"},{"@type":"ListItem","position":3,"name":"OpenAI Broke Up With Cursor"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/openai-broke-up-with-cursor-gisqx1qwp#faq","mainEntity":[{"@type":"Question","name":"When will Cursor lose access to OpenAI models like GPT and Codex?","acceptedAnswer":{"@type":"Answer","text":"OpenAI is winding down its contract providing OpenAI models to Cursor, with a proposed shut-off date of November 12, 2026, following Cursor's acquisition by SpaceX. Cursor users will still be able to use OpenAI models through their own OpenAI API key or through OpenAI's IDE extensions and Codex plugin inside Cursor, but native subscription-based access will end. daily.dev helps developers track how AI coding tool integrations and access change over time."}},{"@type":"Question","name":"Why is OpenAI cutting off Cursor's access to its models after the SpaceX acquisition?","acceptedAnswer":{"@type":"Answer","text":"OpenAI says it cannot be confident SpaceX will use its technology within the terms of service, citing Elon Musk's history of violating contracts, including admitted distillation of OpenAI data for xAI. 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