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Azure OpenAI Service

Azure OpenAI Service

Apply large language models and generative AI to a variety of use cases.

GPT-4 is now available through Azure OpenAI Service. Learn more

Power your apps with large-scale AI models

Take advantage of large-scale, generative AI models with deep understandings of language and code to enable new reasoning and comprehension capabilities for building cutting-edge applications. Apply these coding and language models to a variety of use cases, such as writing assistance, code generation, and reasoning over data. Detect and mitigate harmful use with built-in responsible AI and access enterprise-grade Azure security.

Large, pretrained AI models to unlock new scenarios

Custom AI models fine-tuned with your data and hyperparameters

Built-in features to help ensure you’re using AI responsibly

Enterprise-grade security with role-based access control (RBAC) and private networks

Deliver results for new AI use cases

Gain access to generative models that have been pretrained with trillions of words. Apply them to new scenarios including language, code, reasoning, inferencing, and comprehension.

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Adapt AI models to your specifications

Customize generative models with labeled data for your specific scenario using a simple REST API. Fine-tune your model's hyperparameters to increase accuracy of outputs. Use the few-shot learning capability to provide the API with examples and achieve more relevant results.

Apply AI responsibly

Filter and moderate the content of your users' requests and responses to ensure that coding and language AI models are used responsibly, for their intended purpose.

Help secure your mission-critical workloads

Azure OpenAI Service runs on the Azure global infrastructure to meet your production needs, such as critical enterprise security, compliance, and regional availability. Make your deployment more secure and trusted with role-based authentication and private network connectivity. Train your AI model with full control of your data.

Comprehensive security and compliance, built in

  • Microsoft invests more than USD$1 billion annually on cybersecurity research and development.

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  • We employ more than 3,500 security experts who are dedicated to data security and privacy.

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  • Azure has more certifications than any other cloud provider. View the comprehensive list.

Get started with an Azure free account


Start free. Get USD$200 credit to use within 30 days. While you have your credit, get free amounts of many of our most popular services, plus free amounts of 55+ other services that are always free.


After your credit, move to pay as you go to keep building with the same free services. Pay only if you use more than your free monthly amounts.


After 12 months, you'll keep getting 55+ always-free services—and still pay only for what you use beyond your free monthly amounts.

Customers are innovating with Azure OpenAI Service

Azure OpenAI Service resources and documentation

Get started

Learn more about Azure OpenAI models

Browse the documentation

Take the Introduction to Azure OpenAI course

Watch the Microsoft Mechanics video

Customize the service

Explore the playground and customization in Azure OpenAI Studio. No programming required.

Engage the Azure community

Get answers to technical questions on Microsoft Q&A

Submit product feedback and ideas

Frequently asked questions about Azure OpenAI Service

  • Azure OpenAI Service is now generally available, but the service still currently requires registration, and Microsoft may limit access based on availability and eligibility criteria. Apply now.

  • Pricing is based on a pay-as-you-go consumption model with a price per unit for each model. See Azure OpenAI Service pricing.

  • There are several factors we’re using to evaluate and approve submitted use cases, which include, but aren’t limited to:

    1. Responsible use of the service—using the models as they’re intended to be used.
    2. Capacity—ensuring that we’re able to adequately onboard and provide service to customers.

    Learn more

  • The early-stage nature of the technology may result in unexpected and non-ideal behaviors. We limit access to the service to promote responsible use and limit the impact of high-risk use cases.

  • Azure OpenAI Service brings together OpenAI API and Azure enterprise-level security, compliance, and regional availability.

  • There are several ways that Microsoft is ensuring responsible use, including:

    Tools and guidance: Azure OpenAI Service offers tools to empower customers with the ability to moderate generated content and guidance and implementation best practices to help customers design their applications, while keeping safety front and center.

    Limited access: The service is currently available by limited access. This will ensure that early collaborations ensure the responsible AI safeguards are working in practice.

  • Azure OpenAI Service provides access to GPT-3, Codex, and Embeddings models. Dall·E 2 is available to invited customers. Learn more about the models.

  • We guarantee that Azure OpenAI Service will be available at least 99.9 percent of the time. See SLA details

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