Merge pull request #985 from estill01/patch-1

Enable setting default `model` value for `LiteLLM`, `Chat`, `Completions`

litellm/main.py

@@ -99,17 +99,18 @@ class Chat():
   def __init__(self, params):
     self.params = params
     self.completions = Completions(self.params)
-
+      
 class Completions():
   
   def __init__(self, params):
     self.params = params
 
-  def create(self, model, messages, **kwargs):
+  def create(self, messages, model=None, **kwargs):
     for k, v in kwargs.items():
         self.params[k] = v
+    model = model or self.params.get('model')
     response = completion(model=model, messages=messages, **self.params)
-    return response
+    return response  
 
 @client
 async def acompletion(*args, **kwargs):