added dual models

tools/persona_tool.py

@@ -4,11 +4,15 @@ import json
 from tools.base_tool import BaseTool
 
 class PersonaTool(BaseTool):
+
+
     def __init__(self):
         super().__init__()
-        
         self.api_key = os.environ.get("OPENAI_API_KEY")
 
+    GPT_4O = "gpt-4o"
+    GPT_4O_MINI = "gpt-4o-mini"
+
     def generate_response(self, persona_description: str, query: str) -> str:
         """
         Makes a call to the OpenAI API using the persona as a system prompt.
@@ -58,3 +62,18 @@ class PersonaTool(BaseTool):
             return self.generate_response(kwargs.get("persona_description"), kwargs.get("query"))
         else:
             raise ValueError(f"Function {function_name} not found")
+        
+    def get_chat_response(client, messages, model):
+        
+        model_max_tokens = {
+            GPT_4O: 4096,
+            GPT_4O_MINI: 16384
+        }
+
+        response = client.chat.completions.create(
+            model=model,
+            messages=messages,
+            function_call="none",
+            max_tokens=model_max_tokens[model]
+        )
+        return response