Unable to use GPT 3.5 Turbo version from vba code

Perviouly i was using text_davinci_003 but now it is discontinued with the replacement of GPT 3.5 turbo I am trying to update in my code but it is not working. Please any one can help me. Its very important

VBA code :-:

Const API_ENDPOINT As String = “v1/chat/completions”
Const MODEL As String = “gpt-3.5-turbo”
Const MAX_TOKENS As String = “1048”
Const TEMPERATURE As String = “0”

requestBody = “{” & _
“”“model”“: “”” & MODEL & “”“,” & _
“”“messages”“: “”” & prompt & “”“,” & _
“”“temperature”": " & TEMPERATURE & _
“}”

    Debug.Print requestBody
          
   With httpRequest
       .Open "POST", API_ENDPOINT, False
       .setRequestHeader "Content-Type", "application/json"
       .setRequestHeader "Authorization", "Bearer " & API_KEY
       .send (requestBody)
   End With

Not a VBA expert but should the endpoint not be:

https://api.openai.com/v1/chat/completions

According to the specifications.
https://platform.openai.com/docs/api-reference/chat/create