--- title: OpenAI API | daily.dev description: The OpenAI API changelog covers all updates from late 2023 through April 2026. Key highlights include the progressive release of GPT-4, GPT-4o, GPT-4.1, and... canonical: https://daily.dev/posts/openai-api-aoa1ujdic twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAI API | daily.dev og:description: The OpenAI API changelog covers all updates from late 2023 through April 2026. Key highlights include the progressive release of GPT-4, GPT-4o, GPT-4.1, and... og:url: https://daily.dev/posts/openai-api-aoa1ujdic og:image: https://api.daily.dev/og/posts/aOa1UJdIc.png og:image:alt: OpenAI API 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 API **[Hacker News](https://daily.dev/sources/hn)** · 16 min read · 0 upvotes · 0 comments ## Summary The OpenAI API changelog covers all updates from late 2023 through April 2026. Key highlights include the progressive release of GPT-4, GPT-4o, GPT-4.1, and the full GPT-5 model family (including mini, nano, pro, and codex variants), the launch of the Responses API as a replacement for the Assistants API, new agentic tools (web search, computer use, file search, MCP connectors, Skills, Hosted Shell), the Agents SDK, Sora video generation API, image generation models, Realtime API GA, fine-tuning improvements (DPO, reinforcement fine-tuning), structured outputs, prompt caching, context compaction, and various platform features like RBAC, EKM, data residency, and the Agent Builder. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OpenAI’s GPT-4o Release Notes Explained: What They Reveal About the Future of AI](https://daily.dev/posts/openai-s-gpt-4o-release-notes-explained-what-they-reveal-about-the-future-of-ai-l42diq0np) · Medium · 1 upvotes · 0 comments --- Tags: [#openai](https://daily.dev/tags/openai), [#ai-agents](https://daily.dev/tags/ai-agents), [#gpt](https://daily.dev/tags/gpt) [View this post on daily.dev](https://daily.dev/posts/openai-api-aoa1ujdic) ```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 API","url":"https://daily.dev/posts/openai-api-aoa1ujdic","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openai-api-aoa1ujdic"},"datePublished":"2026-04-24T20:24:30.681Z","dateModified":"2026-04-24T21:57:04.465Z","description":"The OpenAI API changelog covers all updates from late 2023 through April 2026. Key highlights include the progressive release of GPT-4, GPT-4o, GPT-4.1, and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/62821b7fb1a3c022d5c964d9e0fc7e03?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/62821b7fb1a3c022d5c964d9e0fc7e03?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hacker News","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":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/openai-api-aoa1ujdic","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"openai,ai-agents,gpt","timeRequired":"PT16M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"OpenAI API"}]} ```