--- title: GPT-5.3-Codex is now available for all developers in the... description: GPT-5.3-Codex is now generally available to all developers through OpenAI's Responses API, opening access for building applications with the model. canonical: https://daily.dev/posts/gpt-5-3-codex-is-now-available-for-all-developers-in-the-responses-api-start-building-with-it-toda-hakzxwfot twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: GPT-5.3-Codex is now available for all developers in the Responses API. Start building with it today. https://t.co/8ym3r1GTaT https://t.co/6R9youFf8G | daily.dev og:description: GPT-5.3-Codex is now generally available to all developers through OpenAI's Responses API, opening access for building applications with the model. og:url: https://daily.dev/posts/gpt-5-3-codex-is-now-available-for-all-developers-in-the-responses-api-start-building-with-it-toda-hakzxwfot og:image: https://api.daily.dev/og/posts/hakZxWFOT.png og:image:alt: GPT-5.3-Codex is now available for all developers in the Responses API. Start building with it today. https://t.co/8ym3r1GTaT https://t.co/6R9youFf8G og:image:width: 1200 og:image:height: 630 og:locale: en --- [OpenAI Developers](https://daily.dev/sources/openaidevs) [Read on](https://api.daily.dev/r/hakZxWFOT) Feb 24•From x.com  OpenAI Developers @openaidevs GPT-5.3-Codex is now available for all developers in the Responses API. Start building with it today. https://t.co/8ym3r1GTaT https://t.co/6R9youFf8G Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/openaidevs) [OpenAI Developers](https://daily.dev/sources/openaidevs "https://daily.dev/sources/openaidevs") 47 Followers • 4 Upvotes #### Would you recommend this post? Copy link WhatsApp Facebook X New Squad Copy linkShare with your friends ```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":"GPT-5.3-Codex is now available for all developers in the Responses API.\n\nStart building with it today.\nhttps://t.co/8ym3r1GTaT https://t.co/6R9youFf8G","url":"https://daily.dev/posts/gpt-5-3-codex-is-now-available-for-all-developers-in-the-responses-api-start-building-with-it-toda-hakzxwfot","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/gpt-5-3-codex-is-now-available-for-all-developers-in-the-responses-api-start-building-with-it-toda-hakzxwfot"},"datePublished":"2026-02-24T19:30:05.502Z","dateModified":"2026-03-15T06:32:00.791Z","description":"GPT-5.3-Codex is now generally available to all developers through OpenAI's Responses API, opening access for building applications with the model.","image":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","thumbnailUrl":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","isAccessibleForFree":true,"articleSection":"OpenAI Developers","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":"OpenAI Developers","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/d119560a8ad64eeb9b321b32748a184f","url":"https://daily.dev/sources/openaidevs"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/gpt-5-3-codex-is-now-available-for-all-developers-in-the-responses-api-start-building-with-it-toda-hakzxwfot","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-coding,gpt,llm,openai"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"OpenAI Developers","item":"https://daily.dev/sources/openaidevs"},{"@type":"ListItem","position":3,"name":"GPT-5.3-Codex is now available for all developers in the Responses API.\n\nStart building with it today.\nhttps://t.co/8ym3r1GTaT https://t.co/6R9youFf8G"}]} ```