{"id":39630,"date":"2025-04-14T10:30:00","date_gmt":"2025-04-14T17:30:00","guid":{"rendered":"https:\/\/azure.microsoft.com\/en-us\/blog\/?p=39630"},"modified":"2025-11-18T13:22:17","modified_gmt":"2025-11-18T21:22:17","slug":"announcing-the-gpt-4-1-model-series-for-azure-ai-foundry-developers","status":"publish","type":"post","link":"https:\/\/azure.microsoft.com\/en-us\/blog\/announcing-the-gpt-4-1-model-series-for-azure-ai-foundry-developers\/","title":{"rendered":"Announcing the GPT-4.1 model series for Azure AI Foundry and GitHub developers"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">We are excited to share the launch of the next iteration of the GPT model series\u00a0with GPT-4.1, 4.1-mini, and 4.1-nano\u00a0to <a href=\"https:\/\/azure.microsoft.com\/en-us\/products\/ai-services\/openai-service?msockid=36d156f74ff96d723016422b4e966cdb\">Microsoft Azure OpenAI Service<\/a> and <a href=\"https:\/\/github.blog\/changelog\/2025-04-14-openai-gpt-4-1-now-available-in-public-preview-for-github-copilot-and-github-models\/\" target=\"_blank\" rel=\"noreferrer noopener\">GitHub<\/a>. The GPT-4.1 models bring improved capabilities and significant advancements in coding, instruction following, and long-context processing that is critical for developers. We\u2019re also excited to announce fine-tuning support for GPT-4.1 and 4.1-mini, allowing developers to further customize the models for their specific business needs.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/azure.microsoft.com\/en-us\/products\/ai-services\/openai-service?msockid=36d156f74ff96d723016422b4e966cdb\">Build custom generative AI solutions with Azure OpenAI<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-gpt-4-1\">What is GPT-4.1?&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GPT-4.1 is the latest iteration of the GPT-4o model, trained to excel at coding and instruction-following tasks. This model will improve the quality of agentic workflows and accelerate the productivity of developers across all scenarios.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"key-features-of-gpt-4-1\">Key features of GPT-4.1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GPT-4.1 brings several notable improvements:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\"><strong>Enhanced coding and instruction following:<\/strong>\u202fThe model is optimized for better handling of complex technical and coding problems. It generates cleaner, simpler front-end code, accurately identifies necessary changes in existing code, and consistently produces outputs that compile and run successfully.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\"><strong>Long context model:<\/strong>\u202fGPT-4.1 supports one million token inputs, allowing it to process and understand extensive context in a single interaction. This capability is particularly beneficial for tasks requiring detailed and nuanced understanding as well as multi-step agents that increase context as they operate.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\"><strong>Improved instruction following:<\/strong>\u202fThe model excels at following detailed instructions, especially agents containing multiple requests. It is more intuitive and collaborative, making it easier to work with for various applications.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"model-capabilities\">Model capabilities<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to the post-training improvements and long context support, GPT-4.1 retains the same API capabilities as the GPT-4o model family, including tool calling and structured outputs.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Model&nbsp;<\/td><td>Reasoning &amp; Accuracy&nbsp;<\/td><td>Cost &amp; Efficiency&nbsp;<\/td><td>Context Length&nbsp;<\/td><\/tr><tr><td>GPT-4.1&nbsp;<\/td><td>Highest&nbsp;<\/td><td>Higher Cost&nbsp;<\/td><td>1M&nbsp;<\/td><\/tr><tr><td>GPT-4.1-mini&nbsp;<\/td><td>Balanced&nbsp;<\/td><td>Balanced&nbsp;<\/td><td>1M&nbsp;<\/td><\/tr><tr><td>GPT-4.1-nano&nbsp;<\/td><td>Lower&nbsp;<\/td><td>Lowest Cost&nbsp;<\/td><td>1M&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preliminary-benchmarks\">Coming soon: Fine-tune GPT-4.1 to your business needs<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Later this week, we&#8217;ll be enabling <strong>supervised fine-tuning<\/strong> for GPT-4.1 and 4.1-mini, empowering developers to adapt these models to their unique business requirements. Fine-tuning enables you to securely customize the base models on your own datasets, helping align responses with your organization\u2019s specific tone, domain terminology, and task workflows. Fine-tuned models are managed and deployed through the Azure AI Foundry, giving you full control over versioning, security, and scalability.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"explore-gpt-4-1-today\">Explore GPT-4.1 today&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GPT-4.1 is now available on <a href=\"https:\/\/azure.microsoft.com\/en-us\/products\/ai-services\/openai-service?msockid=36d156f74ff96d723016422b4e966cdb\">Azure OpenAI Service<\/a>, bringing unparalleled advancements in AI capabilities. This release marks a significant leap forward, offering enhanced performance, efficiency, and versatility across a wide array of applications. Whether you&#8217;re looking to improve your customer service chatbot, develop cutting-edge data analysis tools, or explore new frontiers in machine learning, GPT-4.1 has something to offer.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We invite you to delve into the new features and discover how GPT-4.1 can revolutionize your workflows and applications. <a href=\"https:\/\/aka.ms\/gpt-4-dot-1\">Explore, deploy, and build applications<\/a> using these models today in Azure AI Foundry to access this powerful tool and stay ahead in the rapidly evolving world of AI.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aka.ms\/gpt-4-dot-1\">Explore GPT-4.1 today<\/a>.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/ai.azure.com\/?tid=72f988bf-86f1-41af-91ab-2d7cd011db47\">Create with Azure AI Foundry<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>We are excited to share the launch of the next generation of the GPT-4o model series with GPT-4.1, 4.1-mini, and 4.1-nano to Microsoft Azure OpenAI Service.<\/p>\n","protected":false},"author":53,"featured_media":39644,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ms_queue_id":["aiblog-content-sync"],"ep_exclude_from_search":false,"_classifai_error":"","_classifai_text_to_speech_error":"","_alt_title":"","footnotes":"","msx_community_cta_settings":[]},"categories":[1454],"tags":[2671],"audience":[3072,3055],"content-type":[1465],"product":[1803,1795,3164],"tech-community":[3041],"topic":[],"coauthors":[3091],"class_list":["post-39630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-machine-learning","tag-ai","audience-ai-professionals","audience-developers","content-type-announcements","product-azure-ai","product-azure-openai","product-microsoft-foundry","review-flag-1680286581-56","review-flag-1-1680286581-825","review-flag-4-1680286581-250","review-flag-machi-1680286585-314","review-flag-new-1680286579-546"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Announcing the GPT-4.1 model series for Azure AI Foundry and GitHub developers | Microsoft Azure Blog<\/title>\n<meta name=\"description\" content=\"We are excited to share the launch of the next generation of the GPT-4o model series with GPT-4.1, 4.1-mini, and 4.1-nano to Microsoft Azure OpenAI Service. 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