add alias for model (#4553)

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>

tests/integration_tests/chat_models/test_openai.py

@@ -25,6 +25,14 @@ def test_chat_openai() -> None:
     assert isinstance(response.content, str)
 
 
+def test_chat_openai_model() -> None:
+    """Test ChatOpenAI wrapper handles model_name."""
+    chat = ChatOpenAI(model="foo")
+    assert chat.model_name == "foo"
+    chat = ChatOpenAI(model_name="bar")
+    assert chat.model_name == "bar"
+
+
 def test_chat_openai_system_message() -> None:
     """Test ChatOpenAI wrapper with system message."""
     chat = ChatOpenAI(max_tokens=10)

tests/integration_tests/llms/test_openai.py

@@ -19,6 +19,13 @@ def test_openai_call() -> None:
     assert isinstance(output, str)
 
 
+def test_openai_model_param() -> None:
+    llm = OpenAI(model="foo")
+    assert llm.model_name == "foo"
+    llm = OpenAI(model_name="foo")
+    assert llm.model_name == "foo"
+
+
 def test_openai_extra_kwargs() -> None:
     """Test extra kwargs to openai."""
     # Check that foo is saved in extra_kwargs.