Why do I get the error "Unrecognized request argument supplied: functions" when using `functions` when calling Azure OpenAI GPT?

Question

I'm trying to use functions when calling Azure OpenAI GPT, as documented in https://platform.openai.com/docs/api-reference/chat/create#chat/create-functions

I use:

import openai
openai.api_type = "azure"
openai.api_base = "https://XXXXXXXX.openai.azure.com/"
openai.api_version = "2023-06-01-preview"
openai.api_key = os.getenv("OPENAI_API_KEY")
response = openai.ChatCompletion.create(
            engine="gpt-35-turbo-XXX",
            model="gpt-35-turbo-0613-XXXX"
            messages=messages,
            functions=functions,
            function_call="auto",
        )

but I get the error:

openai.error.InvalidRequestError:
Unrecognized request argument supplied: functions

Why?

---

Data to run the example code above (messages and functions need to be defined):

messages = [{"role": "system", "content": "You are a helpful assistant."}, {"role": "user", "content": "Hello!"}]
functions = [
    {
        "name": "fetch_pages",
        "description": "Fetch the content of specified pages from the document.",
        "parameters": {
            "type": "object",
            "properties": {
                "pages": {
                    "type": "array",
                    "items": {
                        "type": "number"
                    },
                    "description": "The list of pages to fetch."
                }
            },
            "required": ["pages"]
        }
    },
    {
        "name": "fetch_section",
        "description": "Fetch the content of a specified section.",
        "parameters": {
            "type": "object",
            "properties": {
                "section_title": {
                    "type": "string",
                    "description": "The title of the section to fetch."
                }
            },
            "required": ["section_title"]
        }
    },
    {
        "name": "search",
        "description": "Search the document for a string query.",
        "parameters": {
            "type": "object",
            "properties": {
                "query": {
                    "type": "string",
                    "description": "The search term."
                }
            },
            "required": ["query"]
        }
    }
]

Answer 1

Function support with the Azure API was added in 2023-07-01-preview. The API version needs to be updated in your example:

openai.api_version = "2023-07-01-preview"