--- title: The unexpected death of Codex | daily.dev description: OpenAI has merged the Codex desktop app into ChatGPT, rebranding it as a mode within the unified ChatGPT app rather than keeping it as a standalone product.... canonical: https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The unexpected death of Codex | daily.dev og:description: OpenAI has merged the Codex desktop app into ChatGPT, rebranding it as a mode within the unified ChatGPT app rather than keeping it as a standalone product.... og:url: https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx og:image: https://api.daily.dev/og/posts/Lw8iCpItx.png og:image:alt: The unexpected death of Codex 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. # The unexpected death of Codex **[Theo - t3․gg](https://daily.dev/sources/t3dotgg)** · 26 min read · 1 upvotes · 0 comments ## Summary OpenAI has merged the Codex desktop app into ChatGPT, rebranding it as a mode within the unified ChatGPT app rather than keeping it as a standalone product. The author, a vocal Codex fan who built an open-source clone called T3 Code, expresses strong disappointment with the decision. While acknowledging some genuine improvements — better computer use, unified plugins, faster performance, and a new 'Work' mode for non-developers — the author argues OpenAI fundamentally misunderstood what made Codex valuable: it was a developer-focused brand with its own identity and growing community loyalty. The merger dilutes the Codex brand, confuses both ChatGPT users (who now have a code editor shoved into their chat app) and Codex users (who lost their dedicated tool). The author also notes the departure of OpenAI's CEO of Applications due to health issues as a concerning organizational signal. The post concludes with the author doubling down on T3 Code as an open-source alternative. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What happened to the standalone Codex desktop app from OpenAI? OpenAI folded the standalone Codex app into a redesigned ChatGPT app called ChatGPT Work, which now includes separate chat, work, and codex modes within one interface. Updating the old Codex app now installs this new unified ChatGPT app instead, though users can still switch the dock icon back to the Codex icon in appearance settings. _Developers tracking shifts in AI coding tool branding and workflows can follow changes like this on daily.dev._ ### Why did OpenAI stop training separate Codex-specific AI models? OpenAI folded Codex-specific model training into its main GPT models because the long-running agentic coding capabilities Codex developed turned out to be valuable outside of coding tasks too. GPT-5 was the last model to get a separate Codex variant; those learnings were merged into GPT-5.1's main model instead of producing another dedicated Codex model. _Anyone choosing between coding-specific and general-purpose AI models can track model consolidation trends via daily.dev._ ### What is Claude's co-work feature and how does it differ from Claude Code? Co-work is Anthropic's attempt to make Claude Code's agentic capabilities, like running commands, computer use, and file access, accessible to non-developers for tasks such as updating PowerPoint slides or working with files and browsers. It sits alongside separate home (chat) and code (developer-focused CLI-in-GUI) sections within the Claude app. _Developers evaluating agentic AI tools for non-coding tasks can compare features like this on daily.dev._ --- Tags: [#open-source](https://daily.dev/tags/open-source), [#devtools](https://daily.dev/tags/devtools), [#openai](https://daily.dev/tags/openai), [#chatgpt](https://daily.dev/tags/chatgpt), [#ai-coding](https://daily.dev/tags/ai-coding) [View this post on daily.dev](https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx) ```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":"The unexpected death of Codex","url":"https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx"},"datePublished":"2026-07-11T05:19:39.757Z","dateModified":"2026-09-14T08:44:02.869Z","description":"OpenAI has merged the Codex desktop app into ChatGPT, rebranding it as a mode within the unified ChatGPT app rather than keeping it as a standalone product....","image":"https://i.ytimg.com/vi/zl_Z5TNJB3U/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/zl_Z5TNJB3U/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/the-unexpected-death-of-codex-lw8icpitx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"open-source,devtools,openai,chatgpt,ai-coding","timeRequired":"PT26M","video":{"@type":"VideoObject","name":"The unexpected death of Codex","description":"OpenAI has merged the Codex desktop app into ChatGPT, rebranding it as a mode within the unified ChatGPT app rather than keeping it as a standalone product....","thumbnailUrl":"https://i.ytimg.com/vi/zl_Z5TNJB3U/sddefault.jpg","uploadDate":"2026-07-11T05:19:39.757Z","duration":"PT26M","url":"https://api.daily.dev/r/Lw8iCpItx","embedUrl":"https://www.youtube.com/embed/zl_Z5TNJB3U"}} {"@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":"The unexpected death of Codex"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/the-unexpected-death-of-codex-lw8icpitx#faq","mainEntity":[{"@type":"Question","name":"What happened to the standalone Codex desktop app from OpenAI?","acceptedAnswer":{"@type":"Answer","text":"OpenAI folded the standalone Codex app into a redesigned ChatGPT app called ChatGPT Work, which now includes separate chat, work, and codex modes within one interface. Updating the old Codex app now installs this new unified ChatGPT app instead, though users can still switch the dock icon back to the Codex icon in appearance settings. Developers tracking shifts in AI coding tool branding and workflows can follow changes like this on daily.dev."}},{"@type":"Question","name":"Why did OpenAI stop training separate Codex-specific AI models?","acceptedAnswer":{"@type":"Answer","text":"OpenAI folded Codex-specific model training into its main GPT models because the long-running agentic coding capabilities Codex developed turned out to be valuable outside of coding tasks too. GPT-5 was the last model to get a separate Codex variant; those learnings were merged into GPT-5.1's main model instead of producing another dedicated Codex model. Anyone choosing between coding-specific and general-purpose AI models can track model consolidation trends via daily.dev."}},{"@type":"Question","name":"What is Claude's co-work feature and how does it differ from Claude Code?","acceptedAnswer":{"@type":"Answer","text":"Co-work is Anthropic's attempt to make Claude Code's agentic capabilities, like running commands, computer use, and file access, accessible to non-developers for tasks such as updating PowerPoint slides or working with files and browsers. It sits alongside separate home (chat) and code (developer-focused CLI-in-GUI) sections within the Claude app. Developers evaluating agentic AI tools for non-coding tasks can compare features like this on daily.dev."}}]} ```