Azure OpenAI Provider

The Azure OpenAI provider contains language model support for the Azure OpenAI chat API.

Setup

The Azure OpenAI provider is available in the @ai-sdk/azure module. You can install it with

pnpm add @ai-sdk/azure

Provider Instance

You can import the default provider instance azure from @ai-sdk/azure:

import { azure } from '@ai-sdk/azure';

If you need a customized setup, you can import createAzure from @ai-sdk/azure and create a provider instance with your settings:

import { createAzure } from '@ai-sdk/azure';

const azure = createAzure({
  resourceName: 'your-resource-name', // Azure resource name
  apiKey: 'your-api-key',
});

You can use the following optional settings to customize the OpenAI provider instance:

• resourceName string

  Azure resource name. It defaults to the AZURE_RESOURCE_NAME environment variable.

  The resource name is used in the assembled URL: https://{resourceName}.openai.azure.com/openai/deployments/{modelId}{path}. You can use baseURL instead to specify the URL prefix.

• apiKey string

  API key that is being sent using the api-key header. It defaults to the AZURE_API_KEY environment variable.

• apiVersion string

  Sets a custom api version. Defaults to 2024-10-01-preview.

• baseURL string

  Use a different URL prefix for API calls, e.g. to use proxy servers.

  Either this or resourceName can be used. When a baseURL is provided, the resourceName is ignored.

  With a baseURL, the resolved URL is {baseURL}/{modelId}{path}.

• headers Record<string,string>

  Custom headers to include in the requests.

• fetch (input: RequestInfo, init?: RequestInit) => Promise<Response>

  Custom fetch implementation. Defaults to the global fetch function. You can use it as a middleware to intercept requests, or to provide a custom fetch implementation for e.g. testing.

Language Models

The Azure OpenAI provider instance is a function that you can invoke to create a language model:

const model = azure('your-deployment-name');

You need to pass your deployment name as the first argument.

Example

You can use OpenAI language models to generate text with the generateText function:

import { azure } from '@ai-sdk/azure';
import { generateText } from 'ai';

const { text } = await generateText({
  model: azure('your-deployment-name'),
  prompt: 'Write a vegetarian lasagna recipe for 4 people.',
});

OpenAI language models can also be used in the streamText, generateObject, streamObject, and streamUI functions (see AI SDK Core and AI SDK RSC).

Chat Models

Azure OpenAI chat models support also some model specific settings that are not part of the standard call settings. You can pass them as an options argument:

const model = azure('your-deployment-name', {
  logitBias: {
    // optional likelihood for specific tokens
    '50256': -100,
  },
  user: 'test-user', // optional unique user identifier
});

The following optional settings are available for OpenAI chat models:

• logitBias Record<number, number>

  Modifies the likelihood of specified tokens appearing in the completion.

  Accepts a JSON object that maps tokens (specified by their token ID in the GPT tokenizer) to an associated bias value from -100 to 100. You can use this tokenizer tool to convert text to token IDs. Mathematically, the bias is added to the logits generated by the model prior to sampling. The exact effect will vary per model, but values between -1 and 1 should decrease or increase likelihood of selection; values like -100 or 100 should result in a ban or exclusive selection of the relevant token.

  As an example, you can pass {"50256": -100} to prevent the token from being generated.

• logProbs boolean | number

  Return the log probabilities of the tokens. Including logprobs will increase the response size and can slow down response times. However, it can be useful to better understand how the model is behaving.

  Setting to true will return the log probabilities of the tokens that were generated.

  Setting to a number will return the log probabilities of the top n tokens that were generated.

• parallelToolCalls boolean

  Whether to enable parallel function calling during tool use. Default to true.

• user string

  A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. Learn more.

Completion Models

You can create models that call the completions API using the .completion() factory method. The first argument is the model id. Currently only gpt-35-turbo-instruct is supported.

const model = azure.completion('your-gpt-35-turbo-instruct-deployment');

OpenAI completion models support also some model specific settings that are not part of the standard call settings. You can pass them as an options argument:

const model = azure.completion('your-gpt-35-turbo-instruct-deployment', {
  echo: true, // optional, echo the prompt in addition to the completion
  logitBias: {
    // optional likelihood for specific tokens
    '50256': -100,
  },
  suffix: 'some text', // optional suffix that comes after a completion of inserted text
  user: 'test-user', // optional unique user identifier
});

The following optional settings are available for Azure OpenAI completion models:

• echo: boolean

  Echo back the prompt in addition to the completion.

• logitBias Record<number, number>

  Modifies the likelihood of specified tokens appearing in the completion.

  Accepts a JSON object that maps tokens (specified by their token ID in the GPT tokenizer) to an associated bias value from -100 to 100. You can use this tokenizer tool to convert text to token IDs. Mathematically, the bias is added to the logits generated by the model prior to sampling. The exact effect will vary per model, but values between -1 and 1 should decrease or increase likelihood of selection; values like -100 or 100 should result in a ban or exclusive selection of the relevant token.

  As an example, you can pass {"50256": -100} to prevent the <|endoftext|> token from being generated.

• logProbs boolean | number

  Return the log probabilities of the tokens. Including logprobs will increase the response size and can slow down response times. However, it can be useful to better understand how the model is behaving.

  Setting to true will return the log probabilities of the tokens that were generated.

  Setting to a number will return the log probabilities of the top n tokens that were generated.

• suffix string

  The suffix that comes after a completion of inserted text.

• user string

  A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. Learn more.

Embedding Models

You can create models that call the Azure OpenAI embeddings API using the .embedding() factory method.

const model = azure.embedding('your-embedding-deployment');

Azure OpenAI embedding models support several aditional settings. You can pass them as an options argument:

const model = azure.embedding('your-embedding-deployment', {
  dimensions: 512 // optional, number of dimensions for the embedding
  user: 'test-user' // optional unique user identifier
})

The following optional settings are available for Azure OpenAI embedding models:

• dimensions: number

  The number of dimensions the resulting output embeddings should have. Only supported in text-embedding-3 and later models.

• user string

  A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. Learn more.