{"id":45113,"date":"2025-08-05T10:00:00","date_gmt":"2025-08-05T17:00:00","guid":{"rendered":"https:\/\/azure.microsoft.com\/en-us\/blog\/?p=45113"},"modified":"2025-08-07T10:25:28","modified_gmt":"2025-08-07T17:25:28","slug":"openais-open%e2%80%91source-model-gpt%e2%80%91oss-on-azure-ai-foundry-and-windows-ai-foundry","status":"publish","type":"post","link":"https:\/\/azure.microsoft.com\/en-us\/blog\/openais-open%e2%80%91source-model-gpt%e2%80%91oss-on-azure-ai-foundry-and-windows-ai-foundry\/","title":{"rendered":"OpenAI\u2019s open\u2011source model: gpt\u2011oss on Azure AI Foundry and Windows AI Foundry\u00a0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">AI is no longer a layer in the stack\u2014it\u2019s becoming the stack. This new era calls for tools that are open, adaptable, and ready to run wherever your ideas live\u2014from cloud to edge, from first experiment to scaled deployment. At Microsoft, we\u2019re building a full-stack AI app and agent factory that empowers every developer not just to use AI, but to create with it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That\u2019s the vision behind our AI platform spanning cloud to edge. <strong><a href=\"https:\/\/azure.microsoft.com\/en-us\/products\/ai-foundry\">Azure AI Foundry<\/a> <\/strong>provides a unified platform for building, fine-tuning, and deploying intelligent agents with confidence while <strong>Foundry Local <\/strong>brings open-source models to the edge\u2014enabling flexible, on-device inferencing across billions of devices. <strong><a href=\"https:\/\/developer.microsoft.com\/en-us\/windows\/ai\/\">Windows AI Foundry<\/a><\/strong> builds on this foundation, integrating Foundry Local into Windows 11 to support a secure, low-latency local AI development lifecycle deeply aligned with the Windows platform.&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:\/\/azure.microsoft.com\/en-us\/products\/ai-foundry\">Create&nbsp;intelligent applications with Azure AI Foundry<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">With the launch of <strong>OpenAI\u2019s gpt\u2011oss models<\/strong>\u2014its first open-weight release since GPT\u20112\u2014we\u2019re giving developers and enterprises unprecedented ability to run, adapt, and deploy OpenAI models entirely on their own terms.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the first time, you can run OpenAI models like <strong>gpt\u2011oss\u2011120b<\/strong> on a single enterprise GPU\u2014or run <strong><strong>gpt\u2011oss<\/strong>\u201120b<\/strong> locally. It\u2019s notable that these aren\u2019t stripped-down replicas\u2014they\u2019re fast, capable, and designed with real-world deployment in mind: reasoning at scale in the cloud, or agentic tasks at the edge.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And because they\u2019re open-weight, these models are also easy to fine-tune, distill, and optimize. Whether you\u2019re adapting for a domain-specific copilot, compressing for offline inference, or prototyping locally before scaling in production, <strong>Azure AI Foundry <\/strong>and<strong> Foundry Local<\/strong> give you the tooling to do it all\u2014securely, efficiently, and without compromise.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"open-models-real-momentum\">Open models, real momentum&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Open models have moved from the margins to the mainstream. Today, they\u2019re powering everything from autonomous agents to domain-specific copilots\u2014and redefining how AI gets built and deployed. And with Azure AI Foundry, we\u2019re giving you the infrastructure to move with that momentum:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\">With open weights teams can fine-tune using parameter-efficient methods (LoRA, QLoRA, PEFT), splice in proprietary data, and ship new checkpoints in hours\u2014not weeks.<\/li>\n\n\n\n<li class=\"wp-block-list-item\">You can distill or quantize models, trim context length, or apply structured sparsity to hit strict memory envelopes for edge GPUs and even high-end laptops.<\/li>\n\n\n\n<li class=\"wp-block-list-item\">Full weight access also means you can inspect attention patterns for security audits, inject domain adapters, retrain specific layers, or export to ONNX\/Triton for containerized inference on Azure Kubernetes Service (AKS) or Foundry Local.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In short, open models aren\u2019t just feature-parity replacements\u2014they\u2019re programmable substrates. And Azure AI Foundry provides training pipelines, weight management, and low-latency serving backplane so you can exploit every one of those levers and push the envelope of AI customization.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"meet-gpt-oss-two-models-infinite-possibilities\">Meet gpt\u2011oss: Two models, infinite possibilities<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Today, <strong>gpt\u2011oss-120b<\/strong>&nbsp;and <strong>gpt\u2011oss-20b<\/strong>&nbsp;are available on Azure AI Foundry. gpt\u2011oss-20b is also available on Windows AI Foundry and will be coming soon&nbsp;on MacOS via Foundry Local. Whether you\u2019re optimizing for <strong>sovereignty, performance, or portability<\/strong>, these models unlock a new level of control.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\"><strong><strong><strong>gpt\u2011oss<\/strong><\/strong>-120b is a reasoning powerhouse<\/strong>. With 120 billion parameters and architectural sparsity, it delivers o4-mini level performance at a fraction of the size, excelling at complex tasks like math, code, and domain-specific Q&amp;A\u2014yet it\u2019s efficient enough to run on a single datacenter-class GPU. Ideal for secure, high-performance deployments where latency or cost matter.<\/li>\n\n\n\n<li class=\"wp-block-list-item\"><strong><strong><strong>gpt\u2011oss<\/strong><\/strong>-20b is tool-savvy and lightweight<\/strong>. Optimized for agentic tasks like code execution and tool use, it runs efficiently on a range of Windows hardware, including discrete GPUs with16GB+ VRAM, with support for more devices coming soon. It\u2019s perfect for building autonomous assistants or embedding AI into real-world workflows, even in bandwidth-constrained environments.&nbsp;<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046-1024x374.webp\" alt=\"A screenshot of a graph\" class=\"wp-image-45153 webp-format\" srcset=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046-1024x374.webp 1024w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046-300x109.webp 300w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046-768x280.webp 768w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046.webp 1036w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-orig-src=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/Screenshot-2025-08-05-131046-1024x374.webp\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Both models will soon be API-compatible with the now ubiquitous responses API. That means you can swap them into existing apps with minimal changes\u2014and maximum flexibility.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bringing-gpt-oss-to-cloud-and-edge\">Bringing gpt\u2011oss to Cloud and Edge&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Azure AI Foundry is more than a model catalog\u2014it\u2019s a platform for AI builders. With more than 11,000 models and growing, it gives developers a unified space to evaluate, fine-tune, and productionize models with enterprise-grade reliability and security.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Today, with gpt\u2011oss in the catalog, you can:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\">Spin up inference endpoints using gpt\u2011oss in the cloud with just a few CLI commands.<\/li>\n\n\n\n<li class=\"wp-block-list-item\">Fine-tune and distill the models using your own data and deploy with confidence.<\/li>\n\n\n\n<li class=\"wp-block-list-item\">Mix open and proprietary models to match task-specific needs.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For organizations developing scenarios only possible on client devices,<strong>\u202fFoundry Local<\/strong>\u202fbrings\u202fprominent open-source models to\u202f<strong>Windows AI Foundry<\/strong>, pre-optimized for inference on your own hardware, supporting CPUs, GPUs, and NPUs, through a simple CLI, API, and SDK.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re working in an offline setting, building in a secure network, or running at the edge\u2014Foundry Local and Windows AI Foundry lets you go fully cloud-optional. With the capability to deploy gpt\u2011oss-20b on modern high-performance Windows PCs, your data stays where you want it\u2014and the power of frontier-class models comes to you.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is hybrid AI in action: the ability to mix and match models, optimize performance and cost, and meet your data where it lives.&nbsp;<\/p>\n\n\n\n<aside class=\"cta-block cta-block--align-left cta-block--has-image wp-block-msx-cta\" data-bi-an=\"CTA Block\">\n\t<div class=\"cta-block__content\">\n\t\t\t\t\t<div class=\"cta-block__image-container\">\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"575\" src=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/07\/Azure_Hero_Hexagon_LightYellow_BlueGrad_cropped-1024x575.webp\" class=\"cta-block__image\" alt=\"A colorful background with lines\" srcset=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/07\/Azure_Hero_Hexagon_LightYellow_BlueGrad_cropped-1024x575.webp 1024w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/07\/Azure_Hero_Hexagon_LightYellow_BlueGrad_cropped-300x169.webp 300w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/07\/Azure_Hero_Hexagon_LightYellow_BlueGrad_cropped-768x432.webp 768w, https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/07\/Azure_Hero_Hexagon_LightYellow_BlueGrad_cropped.webp 1260w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t<\/div>\n\t\t\n\t\t<div class=\"cta-block__body\">\n\t\t\t<h2 class=\"cta-block__headline\">Azure AI Foundry<\/h2>\n\t\t\t<p class=\"cta-block__text\">Design, customize,\u00a0and\u00a0manage AI apps and\u00a0agents\u00a0at scale.<\/p>\n\t\t\t\t\t\t\t<div class=\"cta-block__actions\">\n\t\t\t\t\t<a\n\t\t\t\t\t\thref=\"https:\/\/azure.microsoft.com\/en-us\/products\/ai-foundry\"\n\t\t\t\t\t\tclass=\"btn cta-block__link btn-link\"\n\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\tDiscover more &gt;\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t<\/div>\n<\/aside>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"empowering-builders-and-decision-makers\">Empowering builders and decision makers&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The availability of gpt\u2011oss on Azure and Windows unlocks powerful new possibilities for both builders and business leaders.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For developers, open weights mean full transparency. Inspect the model, customize, fine-tune, and deploy on your own terms. With gpt\u2011oss, you can build with confidence, understanding exactly how your model works and how to improve it for your use case.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For decision makers, it\u2019s about control and flexibility. With gpt\u2011oss, you get competitive performance\u2014with no black boxes, fewer trade-offs, and more options across deployment, compliance, and cost.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"a-vision-for-the-future-open-and-responsible-ai-together\">A vision for the future: Open and responsible AI, together&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The release of gpt\u2011oss and its integration into Azure and Windows is part of a bigger story. We envision a future where AI is ubiquitous\u2014and we are committed to being an open platform to bring these innovative technologies to our customers, across all our data centers and devices.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By offering gpt\u2011oss through a variety of entry points, we\u2019re doubling down on our commitment to democratize AI. We recognize that our customers will benefit from a diverse portfolio of models\u2014proprietary and open\u2014and we\u2019re here to support whichever path unlocks value for you. Whether you are working with open-source models or proprietary ones, Foundry\u2019s built-in safety and security tools ensure consistent governance, compliance, and trust\u2014so customers can innovate confidently across all model types.\u202f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finally, our support of gpt-oss is just the latest in our commitment to open tools and standards. In June we announced that GitHub Copilot Chat extension is now <a href=\"http:\/\/github.com\/microsoft\/vscode-copilot-chat\" target=\"_blank\" rel=\"noreferrer noopener\">open source on GitHub<\/a> under the MIT license\u2014the first step to make <a href=\"https:\/\/code.visualstudio.com\/blogs\/2025\/05\/19\/openSourceAIEditor\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>VS Code an open source AI editor<\/strong><\/a>. We seek to accelerate innovation with the open-source community and drive greater value to our market leading developer tools. This is what it looks like when research, product, and platform come together. The very breakthroughs we\u2019ve enabled with our cloud at OpenAI are now open tools that anyone can build on\u2014and Azure is the bridge that brings them to life.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"next-steps-and-resources-for-navigating-gpt-oss\">Next steps and resources for navigating gpt\u2011oss<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"wp-block-list-item\"><strong>Deploy gpt\u2011oss in the cloud today<\/strong> with a few CLI commands using Azure AI Foundry.&nbsp;Browse the <a href=\"https:\/\/ai.azure.com\/catalog\" target=\"_blank\" rel=\"noreferrer noopener\">Azure AI Model Catalog<\/a> to spin up an endpoint.&nbsp;<\/li>\n\n\n\n<li class=\"wp-block-list-item\"><strong>Deploy gpt\u2011oss-20b on your Windows device today (<span style=\"text-decoration: underline\">and soon<\/span> on MacOS) via Foundry Local<\/strong>. <a href=\"https:\/\/learn.microsoft.com\/en-us\/azure\/ai-foundry\/foundry-local\/get-started\" target=\"_blank\" rel=\"noreferrer noopener\">Follow the QuickStart guide<\/a> to learn more.<\/li>\n\n\n\n<li class=\"wp-block-list-item\">Pricing<sup>1<\/sup> for these models is as follows:<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/image-10.webp\" alt=\"A screenshot of a computer\" class=\"wp-image-45211 webp-format\" data-orig-src=\"https:\/\/azure.microsoft.com\/en-us\/blog\/wp-content\/uploads\/2025\/08\/image-10.webp\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>*See <a href=\"https:\/\/azure.microsoft.com\/en-us\/pricing\/details\/virtual-machines\/windows\/?msockid=303ee5cb18b86ab62ac3f67c193c6bc3\">Managed Compute pricing page here<\/a>.<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<p class=\"wp-block-paragraph\"><em><sup>1<\/sup>Pricing is accurate as of August 2025.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>With the launch of OpenAI\u2019s gpt\u2011oss models\u2014its first open-weight release since GPT\u20112\u2014we\u2019re giving developers and enterprises unprecedented ability to run, adapt, and deploy OpenAI models entirely on their own terms.<\/p>\n","protected":false},"author":39,"featured_media":45138,"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":[3072,3054,3055],"content-type":[1465],"product":[1803,3164],"tech-community":[3041],"topic":[],"coauthors":[3071,3270],"class_list":["post-45113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-machine-learning","tag-ai","audience-ai-professionals","audience-business-decision-makers","audience-developers","content-type-announcements","product-azure-ai","product-microsoft-foundry","review-flag-1680286581-295","review-flag-1680286581-56","review-flag-1680286581-364","review-flag-1-1680286581-825","review-flag-2-1680286581-601","review-flag-new-1680286579-546"],"yoast_head":"<!-- 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