[chat.completions.create] 404 Problem When Call Azure OpenAI V1 Chat Completion Api

[wuxiaojun514]

Confirm this is a Node library issue and not an underlying OpenAI API issue

• This is an issue with the Node library

Describe the bug

I want to call Azure openai v1 chat completion api
Ideally the request should like POST {endpoint}/openai/v1/chat/completions
But our node library send request like POST {endpoint}/openai/v1/deployments/{model}/chat/completions?api-version=preview which finally got 404 error

I tried to update package to latest version 6.3.0 but it doesn't help.

I did a bit trouble shooting in source code and found that:

if the api address exists in _deployments_endpoints array, the it will set
/deployments/${model}${options.path} in the path (See https://github.com/openai/openai-node/blob/master/src/azure.ts#L134 )

I saw there is a similar issue #1607 ,but response api is not in the _deployments_endpoints array so it won't impact response api

To Reproduce

Run the code like following, then I got 404 error

const options: AzureClientOptions = {
        apiKey: AZURE_OPENAI_API_KEY,
        baseURL:AZURE_OPENAI_ENDPOINT.endsWith("/")? AZURE_OPENAI_ENDPOINT+"openai/v1/":AZURE_OPENAI_ENDPOINT+"/openai/v1/",
        deployment: "gpt-4.1",
        apiVersion:"preview",
        dangerouslyAllowBrowser: true,
      };

 this.client = new AzureOpenAI(options);
const stream = await this.client.chat.completions.create({
      model: "gpt-4.1",
      messages: [
        {
          role: "user",
          content: "Hello",
        },
      ],
      stream: true,
    });

Please let me know if there is other way to call azure openai v1 chat completion api successfully

Code snippets

OS

win11

Node version

Node v22

Library version

openai 6.3.0