Validate open ai creds as well as check for required model access

validate_openai_creds.py

import openai

# OpenAI Models used
OPENAI_GPT_35_MODEL = "gpt-3.5-turbo-16k"
OPENAI_GPT_4_MODEL = "gpt-4"

def is_valid_openai_creds(
    openai_api_key: str, openai_organization_id: str
) -> Tuple[bool, str]:
    """Checks if OpenAI API Key and Organization ID is valid as well as have access to required OpenAI models"""

    try:
        openai.api_key = openai_api_key
        openai.organization = openai_organization_id
        available_models = [item.id for item in openai.Model.list().data]
        required_models = [OPENAI_GPT_35_MODEL, OPENAI_GPT_4_MODEL]
        if len(set(required_models) - set(available_models)) != 0:
            error_message = f"Provided OpenAI Credentials does not have access to all {required_models=}"
            return (False, error_message)
    except openai.error.AuthenticationError:
        error_message = "Invalid OpenAI API Key and/or Organization ID"
        return (False, error_message)
    else:
        return (True, None)