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Azure OpenAI Service models

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Azure OpenAI Service is powered by a diverse set of models with different capabilities and price points. Model availability varies by region and cloud. For Azure Government model availability, please refer to Azure Government OpenAI Service.

Models Description
o1 & o1-mini Limited access models, specifically designed to tackle reasoning and problem-solving tasks with increased focus and capability.
GPT-4o & GPT-4o mini & GPT-4 Turbo The latest most capable Azure OpenAI models with multimodal versions, which can accept both text and images as input.
GPT-4o-Realtime-Preview A GPT-4o model that supports low-latency, "speech in, speech out" conversational interactions.
GPT-4 A set of models that improve on GPT-3.5 and can understand and generate natural language and code.
GPT-3.5 A set of models that improve on GPT-3 and can understand and generate natural language and code.
Embeddings A set of models that can convert text into numerical vector form to facilitate text similarity.
DALL-E A series of models that can generate original images from natural language.
Whisper A series of models in preview that can transcribe and translate speech to text.
Text to speech (Preview) A series of models in preview that can synthesize text to speech.

o1 and o1-mini models limited access

The Azure OpenAI o1 and o1-mini models are specifically designed to tackle reasoning and problem-solving tasks with increased focus and capability. These models spend more time processing and understanding the user's request, making them exceptionally strong in areas like science, coding, and math compared to previous iterations.

Model ID Description Max Request (tokens) Training Data (up to)
o1 (2024-12-17) The most capable model in the o1 series, offering enhanced reasoning abilities.
Request access: limited access model application
- Structured outputs
- Text, image processing
- Functions/Tools
Input: 200,000
Output: 100,000
o1-preview (2024-09-12) Older preview version Input: 128,000
Output: 32,768		 Oct 2023
o1-mini (2024-09-12) A faster and more cost-efficient option in the o1 series, ideal for coding tasks requiring speed and lower resource consumption. Input: 128,000
Output: 65,536		 Oct 2023

Availability

The o1 and o1-mini models are now available for API access and model deployment. Registration is required, and access will be granted based on Microsoft's eligibility criteria. Customers who previously applied and received access to o1-preview, don't need to reapply as they are automatically on the wait-list for the latest model.

Request access: limited access model application

Once access has been granted, you will need to create a deployment for each model. If you have an existing o1-preview deployment in place upgrade is currently not supported, you will need to create a new deployment.

To learn more about the advanced o1 series models see, getting started with o1 series reasoning models.

Region availability

Model Region
o1 East US2 (Global Standard)
Sweden Central (Global Standard)
o1-preview See the models table.
o1-mini See the models table.

GPT-4o-Realtime-Preview

The gpt-4o-realtime-preview model is part of the GPT-4o model family and supports low-latency, "speech in, speech out" conversational interactions. GPT-4o audio is designed to handle real-time, low-latency conversational interactions, making it a great fit for support agents, assistants, translators, and other use cases that need highly responsive back-and-forth with a user.

GPT-4o audio is available in the East US 2 (eastus2) and Sweden Central (swedencentral) regions. To use GPT-4o audio, you need to create or use an existing resource in one of the supported regions.

When your resource is created, you can deploy the GPT-4o audio model. If you are performing a programmatic deployment, the model name is gpt-4o-realtime-preview. For more information on how to use GPT-4o audio, see the GPT-4o audio documentation.

Details about maximum request tokens and training data are available in the following table.

Model ID Description Max Request (tokens) Training Data (up to)
gpt-4o-realtime-preview (2024-10-01-preview)
GPT-4o audio		 Audio model for real-time audio processing Input: 128,000
Output: 4,096		 Oct 2023

GPT-4o and GPT-4 Turbo

GPT-4o integrates text and images in a single model, enabling it to handle multiple data types simultaneously. This multimodal approach enhances accuracy and responsiveness in human-computer interactions. GPT-4o matches GPT-4 Turbo in English text and coding tasks while offering superior performance in non-English languages and vision tasks, setting new benchmarks for AI capabilities.

How do I access the GPT-4o and GPT-4o mini models?

GPT-4o and GPT-4o mini are available for standard and global-standard model deployment.

You need to create or use an existing resource in a supported standard or global standard region where the model is available.

When your resource is created, you can deploy the GPT-4o models. If you are performing a programmatic deployment, the model names are:

  • gpt-4o Version 2024-11-20
  • gpt-4o Version 2024-08-06
  • gpt-4o Version 2024-05-13
  • gpt-4o-mini Version 2024-07-18

GPT-4 Turbo

GPT-4 Turbo is a large multimodal model (accepting text or image inputs and generating text) that can solve difficult problems with greater accuracy than any of OpenAI's previous models. Like GPT-3.5 Turbo, and older GPT-4 models GPT-4 Turbo is optimized for chat and works well for traditional completions tasks.

The latest GA release of GPT-4 Turbo is:

  • gpt-4 Version: turbo-2024-04-09

This is the replacement for the following preview models:

  • gpt-4 Version: 1106-Preview
  • gpt-4 Version: 0125-Preview
  • gpt-4 Version: vision-preview

Differences between OpenAI and Azure OpenAI GPT-4 Turbo GA Models

  • OpenAI's version of the latest 0409 turbo model supports JSON mode and function calling for all inference requests.
  • Azure OpenAI's version of the latest turbo-2024-04-09 currently doesn't support the use of JSON mode and function calling when making inference requests with image (vision) input. Text based input requests (requests without image_url and inline images) do support JSON mode and function calling.

Differences from gpt-4 vision-preview

  • Azure AI specific Vision enhancements integration with GPT-4 Turbo with Vision isn't supported for gpt-4 Version: turbo-2024-04-09. This includes Optical Character Recognition (OCR), object grounding, video prompts, and improved handling of your data with images.

Important

Vision enhancements preview features including Optical Character Recognition (OCR), object grounding, video prompts will be retired and no longer available once gpt-4 Version: vision-preview is upgraded to turbo-2024-04-09. If you are currently relying on any of these preview features, this automatic model upgrade will be a breaking change.

GPT-4 Turbo provisioned managed availability

  • gpt-4 Version: turbo-2024-04-09 is available for both standard and provisioned deployments. Currently the provisioned version of this model doesn't support image/vision inference requests. Provisioned deployments of this model only accept text input. Standard model deployments accept both text and image/vision inference requests.

Deploying GPT-4 Turbo with Vision GA

To deploy the GA model from the Azure AI Foundry portal, select GPT-4 and then choose the turbo-2024-04-09 version from the dropdown menu. The default quota for the gpt-4-turbo-2024-04-09 model will be the same as current quota for GPT-4-Turbo. See the regional quota limits.

GPT-4

GPT-4 is the predecessor to GPT-4 Turbo. Both the GPT-4 and GPT-4 Turbo models have a base model name of gpt-4. You can distinguish between the GPT-4 and Turbo models by examining the model version.

  • gpt-4 Version 0314
  • gpt-4 Version 0613
  • gpt-4-32k Version 0613

You can see the token context length supported by each model in the model summary table.

GPT-4 and GPT-4 Turbo models

  • These models can only be used with the Chat Completion API.

See model versions to learn about how Azure OpenAI Service handles model version upgrades, and working with models to learn how to view and configure the model version settings of your GPT-4 deployments.

Model ID Description Max Request (tokens) Training Data (up to)
gpt-4o (2024-11-20)
GPT-4o (Omni)		 Latest large GA model
- Structured outputs
- Text, image processing
- JSON Mode
- parallel function calling
- Enhanced accuracy and responsiveness
- Parity with English text and coding tasks compared to GPT-4 Turbo with Vision
- Superior performance in non-English languages and in vision tasks.
- Enhanced creative writing ability		 Input: 128,000
Output: 16,384		 Oct 2023
gpt-4o (2024-08-06)
GPT-4o (Omni)		 - Structured outputs
- Text, image processing
- JSON Mode
- parallel function calling
- Enhanced accuracy and responsiveness
- Parity with English text and coding tasks compared to GPT-4 Turbo with Vision
- Superior performance in non-English languages and in vision tasks		 Input: 128,000
Output: 16,384		 Oct 2023
gpt-4o-mini (2024-07-18)
GPT-4o mini		 Latest small GA model
- Fast, inexpensive, capable model ideal for replacing GPT-3.5 Turbo series models.
- Text, image processing
- JSON Mode
- parallel function calling		 Input: 128,000
Output: 16,384		 Oct 2023
gpt-4o (2024-05-13)
GPT-4o (Omni)		 Text, image processing
- JSON Mode
- parallel function calling
- Enhanced accuracy and responsiveness
- Parity with English text and coding tasks compared to GPT-4 Turbo with Vision
- Superior performance in non-English languages and in vision tasks		 Input: 128,000
Output: 4,096		 Oct 2023
gpt-4 (turbo-2024-04-09)
GPT-4 Turbo with Vision		 New GA model
- Replacement for all previous GPT-4 preview models (vision-preview, 1106-Preview, 0125-Preview).
- Feature availability is currently different depending on method of input, and deployment type.		 Input: 128,000
Output: 4,096		 Dec 2023
gpt-4 (0125-Preview)*
GPT-4 Turbo Preview		 Preview Model
-Replaces 1106-Preview
- Better code generation performance
- Reduces cases where the model doesn't complete a task
- JSON Mode
- parallel function calling
- reproducible output (preview)		 Input: 128,000
Output: 4,096		 Dec 2023
gpt-4 (vision-preview)
GPT-4 Turbo with Vision Preview		 Preview model
- Accepts text and image input.
- Supports enhancements
- JSON Mode
- parallel function calling
- reproducible output (preview)		 Input: 128,000
Output: 4,096		 Apr 2023
gpt-4 (1106-Preview)
GPT-4 Turbo Preview		 Preview Model
- JSON Mode
- parallel function calling
- reproducible output (preview)		 Input: 128,000
Output: 4,096		 Apr 2023
gpt-4-32k (0613) Older GA model
- Basic function calling with tools		 32,768 Sep 2021
gpt-4 (0613) Older GA model
- Basic function calling with tools		 8,192 Sep 2021
gpt-4-32k(0314) Older GA model
- Retirement information		 32,768 Sep 2021
gpt-4 (0314) Older GA model
- Retirement information		 8,192 Sep 2021

Caution

We don't recommend using preview models in production. We will upgrade all deployments of preview models to either future preview versions or to the latest stable GA version. Models designated preview do not follow the standard Azure OpenAI model lifecycle.

  • GPT-4 version 0125-preview is an updated version of the GPT-4 Turbo preview previously released as version 1106-preview.
  • GPT-4 version 0125-preview completes tasks such as code generation more completely compared to gpt-4-1106-preview. Because of this, depending on the task, customers may find that GPT-4-0125-preview generates more output compared to the gpt-4-1106-preview. We recommend customers compare the outputs of the new model. GPT-4-0125-preview also addresses bugs in gpt-4-1106-preview with UTF-8 handling for non-English languages.
  • GPT-4 version turbo-2024-04-09 is the latest GA release and replaces 0125-Preview, 1106-preview, and vision-preview.

Important

The GPT-4 (gpt-4) versions 1106-Preview, 0125-Preview, and vision-preview will be upgraded with a stable version of gpt-4 in the future.

  • Deployments of gpt-4 versions 1106-Preview, 0125-Preview, and vision-preview set to "Auto-update to default" and "Upgrade when expired" will start to be upgraded after the stable version is released. For each deployment, a model version upgrade takes place with no interruption in service for API calls. Upgrades are staged by region and the full upgrade process is expected to take 2 weeks.
  • Deployments of gpt-4 versions 1106-Preview, 0125-Preview, and vision-preview set to "No autoupgrade" will not be upgraded and will stop operating when the preview version is upgraded in the region. See Azure OpenAI model retirements and deprecations for more information on the timing of the upgrade.

GPT-3.5

GPT-3.5 models can understand and generate natural language or code. The most capable and cost effective model in the GPT-3.5 family is GPT-3.5 Turbo, which has been optimized for chat and works well for traditional completions tasks as well. GPT-3.5 Turbo is available for use with the Chat Completions API. GPT-3.5 Turbo Instruct has similar capabilities to text-davinci-003 using the Completions API instead of the Chat Completions API. We recommend using GPT-3.5 Turbo and GPT-3.5 Turbo Instruct over legacy GPT-3.5 and GPT-3 models.

Model ID Description Max Request (tokens) Training Data (up to)
gpt-35-turbo (0125) NEW Latest GA Model
- JSON Mode
- parallel function calling
- reproducible output (preview)
- Higher accuracy at responding in requested formats.
- Fix for a bug which caused a text encoding issue for non-English language function calls.		 Input: 16,385
Output: 4,096		 Sep 2021
gpt-35-turbo (1106) Older GA Model
- JSON Mode
- parallel function calling
- reproducible output (preview)		 Input: 16,385
Output: 4,096		 Sep 2021
gpt-35-turbo-instruct (0914) Completions endpoint only
- Replacement for legacy completions models		 4,097 Sep 2021
gpt-35-turbo-16k (0613) Older GA Model
- Basic function calling with tools		 16,384 Sep 2021
gpt-35-turbo (0613) Older GA Model
- Basic function calling with tools		 4,096 Sep 2021
gpt-35-turbo1 (0301) Older GA Model
- Retirement information		 4,096 Sep 2021

To learn more about how to interact with GPT-3.5 Turbo and the Chat Completions API check out our in-depth how-to.

1 This model will accept requests > 4,096 tokens. It is not recommended to exceed the 4,096 input token limit as the newer version of the model are capped at 4,096 tokens. If you encounter issues when exceeding 4,096 input tokens with this model this configuration is not officially supported.

Embeddings

text-embedding-3-large is the latest and most capable embedding model. Upgrading between embeddings models is not possible. In order to move from using text-embedding-ada-002 to text-embedding-3-large you would need to generate new embeddings.

  • text-embedding-3-large
  • text-embedding-3-small
  • text-embedding-ada-002

In testing, OpenAI reports both the large and small third generation embeddings models offer better average multi-language retrieval performance with the MIRACL benchmark while still maintaining performance for English tasks with the MTEB benchmark.

Evaluation Benchmark text-embedding-ada-002 text-embedding-3-small text-embedding-3-large
MIRACL average 31.4 44.0 54.9
MTEB average 61.0 62.3 64.6

The third generation embeddings models support reducing the size of the embedding via a new dimensions parameter. Typically larger embeddings are more expensive from a compute, memory, and storage perspective. Being able to adjust the number of dimensions allows more control over overall cost and performance. The dimensions parameter is not supported in all versions of the OpenAI 1.x Python library, to take advantage of this parameter we recommend upgrading to the latest version: pip install openai --upgrade.

OpenAI's MTEB benchmark testing found that even when the third generation model's dimensions are reduced to less than text-embeddings-ada-002 1,536 dimensions performance remains slightly better.

DALL-E

The DALL-E models generate images from text prompts that the user provides. DALL-E 3 is generally available for use with the REST APIs. DALL-E 2 and DALL-E 3 with client SDKs are in preview.

Whisper

The Whisper models can be used for speech to text.

You can also use the Whisper model via Azure AI Speech batch transcription API. Check out What is the Whisper model? to learn more about when to use Azure AI Speech vs. Azure OpenAI Service.

Text to speech (Preview)

The OpenAI text to speech models, currently in preview, can be used to synthesize text to speech.

You can also use the OpenAI text to speech voices via Azure AI Speech. To learn more, see OpenAI text to speech voices via Azure OpenAI Service or via Azure AI Speech guide.

Model summary table and region availability

Models by deployment type

Azure OpenAI provides customers with choices on the hosting structure that fits their business and usage patterns. The service offers two main types of deployment:

  • Standard is offered with a global deployment option, routing traffic globally to provide higher throughput.
  • Provisioned is also offered with a global deployment option, allowing customers to purchase and deploy provisioned throughput units across Azure global infrastructure.

All deployments can perform the exact same inference operations, however the billing, scale, and performance are substantially different. To learn more about Azure OpenAI deployment types see our deployment types guide.

Global standard model availability

Region o1-preview, 2024-09-12 o1-mini, 2024-09-12 gpt-4o, 2024-05-13 gpt-4o, 2024-08-06 gpt-4o, 2024-11-20 gpt-4o-mini, 2024-07-18 gpt-4o-realtime-preview, 2024-10-01 gpt-4, turbo-2024-04-09
australiaeast - - ✅ ✅ - ✅ - ✅
brazilsouth - - ✅ ✅ - ✅ - ✅
canadaeast - - ✅ ✅ - ✅ - ✅
eastus ✅ ✅ ✅ ✅ ✅ ✅ - ✅
eastus2 ✅ ✅ ✅ ✅ ✅ ✅ ✅ ✅
francecentral - - ✅ ✅ - ✅ - ✅
germanywestcentral - - ✅ ✅ - ✅ - ✅
japaneast - - ✅ ✅ - ✅ - ✅
koreacentral - - ✅ ✅ - ✅ - ✅
northcentralus ✅ ✅ ✅ ✅ ✅ ✅ - ✅
norwayeast - - ✅ ✅ - ✅ - ✅
polandcentral - - ✅ ✅ - ✅ - ✅
southafricanorth - - ✅ ✅ - ✅ - ✅
southcentralus ✅ ✅ ✅ ✅ ✅ ✅ - ✅
southindia - - ✅ ✅ - ✅ - ✅
spaincentral - - ✅ ✅ - ✅ - ✅
swedencentral ✅ ✅ ✅ ✅ ✅ ✅ ✅ ✅
switzerlandnorth - - ✅ ✅ - ✅ - ✅
uaenorth - - ✅ ✅ - ✅ - ✅
uksouth - - ✅ ✅ - ✅ - ✅
westeurope - - ✅ ✅ - ✅ - ✅
westus ✅ ✅ ✅ ✅ ✅ ✅ - ✅
westus3 ✅ ✅ ✅ ✅ ✅ ✅ - ✅

This table doesn't include fine-tuning regional availability information. Consult the fine-tuning section for this information.

Standard models by endpoint

Chat completions

Region o1-preview, 2024-09-12 o1-mini, 2024-09-12 gpt-4o, 2024-05-13 gpt-4o, 2024-08-06 gpt-4o-mini, 2024-07-18 gpt-4, 0613 gpt-4, 1106-Preview gpt-4, 0125-Preview gpt-4, vision-preview gpt-4, turbo-2024-04-09 gpt-4-32k, 0613 gpt-35-turbo, 0301 gpt-35-turbo, 0613 gpt-35-turbo, 1106 gpt-35-turbo, 0125 gpt-35-turbo-16k, 0613
australiaeast - - - - - ✅ ✅ - ✅ - ✅ - ✅ ✅ ✅ ✅
canadaeast - - - - - ✅ ✅ - - - ✅ - ✅ ✅ ✅ ✅
eastus ✅ ✅ ✅ ✅ ✅ - - ✅ - ✅ - ✅ ✅ - ✅ ✅
eastus2 ✅ ✅ ✅ ✅ ✅ - ✅ - - ✅ - - ✅ - ✅ ✅
francecentral - - - - - ✅ ✅ - - - ✅ ✅ ✅ ✅ - ✅
japaneast - - - - - - - - ✅ - - - ✅ - ✅ ✅
northcentralus ✅ ✅ ✅ ✅ ✅ - - ✅ - ✅ - - ✅ - ✅ ✅
norwayeast - - - - - - ✅ - - - - - - - - -
southcentralus ✅ ✅ ✅ ✅ ✅ - - ✅ - ✅ - ✅ - - ✅ -
southindia - - - - - - ✅ - - - - - - ✅ ✅ -
swedencentral ✅ ✅ ✅ ✅ ✅ ✅ ✅ - ✅ ✅ ✅ - ✅ ✅ - ✅
switzerlandnorth - - - - - ✅ - - ✅ - ✅ - ✅ - ✅ ✅
uksouth - - - - - - ✅ ✅ - - - ✅ ✅ ✅ ✅ ✅
westeurope - - - - - - - - - - - ✅ - - - -
westus ✅ ✅ ✅ ✅ ✅ - ✅ - ✅ ✅ - - - ✅ ✅ -
westus3 ✅ ✅ ✅ ✅ ✅ - ✅ - - ✅ - - - - ✅ -

GPT-4 and GPT-4 Turbo model availability

Select customer access

In addition to the regions above which are available to all Azure OpenAI customers, some select pre-existing customers have been granted access to versions of GPT-4 in additional regions:

Model Region
gpt-4 (0314)
gpt-4-32k (0314)		 East US
France Central
South Central US
UK South
gpt-4 (0613)
gpt-4-32k (0613)		 East US
East US 2
Japan East
UK South

GPT-3.5 models

See model versions to learn about how Azure OpenAI Service handles model version upgrades, and working with models to learn how to view and configure the model version settings of your GPT-3.5 Turbo deployments.

Fine-tuning models

Note

gpt-35-turbo - Fine-tuning of this model is limited to a subset of regions, and isn't available in every region the base model is available.

The supported regions for fine-tuning might vary if you use Azure OpenAI models in an Azure AI Foundry project versus outside a project.

Model ID Fine-tuning regions Max request (tokens) Training Data (up to)
babbage-002 North Central US
Sweden Central
Switzerland West		 16,384 Sep 2021
davinci-002 North Central US
Sweden Central
Switzerland West		 16,384 Sep 2021
gpt-35-turbo (0613) East US2
North Central US
Sweden Central
Switzerland West		 4,096 Sep 2021
gpt-35-turbo (1106) East US2
North Central US
Sweden Central
Switzerland West		 Input: 16,385
Output: 4,096		 Sep 2021
gpt-35-turbo (0125) East US2
North Central US
Sweden Central
Switzerland West		 16,385 Sep 2021
gpt-4 (0613) 1 North Central US
Sweden Central		 8192 Sep 2021
gpt-4o-mini (2024-07-18) North Central US
Sweden Central		 Input: 128,000
Output: 16,384
Training example context length: 64,536		 Oct 2023
gpt-4o (2024-08-06) East US2
North Central US
Sweden Central		 Input: 128,000
Output: 16,384
Training example context length: 64,536		 Oct 2023

1 GPT-4 is currently in public preview.

Assistants (Preview)

For Assistants you need a combination of a supported model, and a supported region. Certain tools and capabilities require the latest models. The following models are available in the Assistants API, SDK, and Azure AI Foundry. The following table is for pay-as-you-go. For information on Provisioned Throughput Unit (PTU) availability, see provisioned throughput. The listed models and regions can be used with both Assistants v1 and v2. You can use global standard models if they are supported in the regions listed below.

Region gpt-35-turbo (0613) gpt-35-turbo (1106) fine tuned gpt-3.5-turbo-0125 gpt-4 (0613) gpt-4 (1106) gpt-4 (0125) gpt-4o (2024-05-13) gpt-4o-mini (2024-07-18)
Australia East ✅ ✅ ✅ ✅
East US ✅ ✅ ✅ ✅
East US 2 ✅ ✅ ✅ ✅ ✅
France Central ✅ ✅ ✅ ✅
Japan East ✅
Norway East ✅
Sweden Central ✅ ✅ ✅ ✅ ✅ ✅
UK South ✅ ✅ ✅ ✅
West US ✅ ✅ ✅
West US 3 ✅ ✅

Model retirement

For the latest information on model retirements, refer to the model retirement guide.

Next steps