Problem with initializing AzureChatOpenAI()

In my environment, I used package versions openai=0.27.0 and langchain=0.0.341.

I tried with the below code to call AzureChatOpenAI() from langchain using Python SDK.

Code:

from langchain.chat_models import AzureChatOpenAI
from langchain.schema import HumanMessage

OPENAI_API_BASE="<Your azure openai endpoint>"
GPT_DEPLOYMENT_NAME="<Your deployment name>"
OPENAI_API_KEY="<Your api key>"

model = AzureChatOpenAI(
openai_api_base=OPENAI_API_BASE,
openai_api_version="2023-07-01-preview",
azure_deployment=GPT_DEPLOYMENT_NAME,
openai_api_key=OPENAI_API_KEY,
openai_api_type="azure",
)

message = HumanMessage(
    content="Translate this sentence from English to Spanish.MS Dhoni as the greatest finisher in the history of the sport"
)    
print(model([message]))   

Output:

content='MS Dhoni como el mejor finalizador en la historia del deporte.'

Reference:

Azure OpenAI | 🦜️🔗 Langchain

Update:

I got a similar error when I had OPENAI_* and AZURE_* environment variables in openai version greater than 1.0.0.

You can refer to this GitHub page about this issue.

So try using AZURE_OPENAI_ENDPOINT in your environment.

Code:

from langchain.chat_models import AzureChatOpenAI
from langchain.schema import HumanMessage
import os

GPT_DEPLOYMENT_NAME="deploymentname1"

os.environ["AZURE_OPENAI_API_KEY"] = "2xxxxx1"
os.environ["AZURE_OPENAI_ENDPOINT"] = "https://xxxx.openai.azure.com/"


model = AzureChatOpenAI(
    azure_endpoint=os.getenv("AZURE_OPENAI_ENDPOINT"),
    openai_api_version="2023-03-15-preview",
    azure_deployment=GPT_DEPLOYMENT_NAME,
)

message = HumanMessage(
    content="Translate this sentence from English to Spanish.MS Dhoni as the greatest finisher in the history of the sport"
)    
print(model([message]))  

For langchain_openai==0.0.5 this setup seems to be working:

llm = AzureChatOpenAI( 
    openai_api_key=os.getenv("KEY"),
    azure_endpoint=os.getenv("ENDPOINT"),
    openai_api_version=os.getenv("API_VERSION"),
    deployment_name=os.getenv("MODEL_NAME"),
)

I intentionally didn't use the suggested environment variables from docs to be sure that only explicitly passed parameters are used.