refactor: change default Maritaca model from sabia-3 to sabiazinho-3

- Updated all Maritaca client references to use sabiazinho-3 model
- Changed default model in config.py to sabiazinho-3
- Updated chat_stable.py, chat_simple.py, chat_emergency.py endpoints
- Updated MaritacaClient default initialization model
- More cost-effective model choice for production use

src/api/routes/chat_emergency.py

@@ -88,7 +88,7 @@ async def try_maritaca(message: str) -> Optional[str]:
                         },
                         {"role": "user", "content": message}
                     ],
-                    "model": "sabia-3",
+                    "model": "sabiazinho-3",
                     "temperature": 0.7,
                     "max_tokens": 400
                 }
@@ -123,7 +123,7 @@ async def chat_emergency(request: ChatRequest) -> ChatResponse:
             confidence=0.95,
             suggested_actions=["investigate_contracts", "analyze_expenses", "generate_report"],
             metadata={
-                "model": "sabia-3",
+                "model": "sabiazinho-3",
                 "backend": "maritaca_ai",
                 "timestamp": datetime.utcnow().isoformat()
             }

src/api/routes/chat_simple.py

@@ -25,7 +25,7 @@ if MARITACA_API_KEY:
     try:
         maritaca_client = MaritacaClient(
             api_key=MARITACA_API_KEY,
-            model=MaritacaModel.SABIA_3
+            model=MaritacaModel.SABIAZINHO_3
         )
         logger.info("Maritaca AI client initialized successfully")
     except Exception as e:

src/api/routes/chat_stable.py

@@ -29,7 +29,7 @@ def get_maritaca_client():
         if api_key:
             maritaca_client = MaritacaClient(
                 api_key=api_key,
-                model=MaritacaModel.SABIA_3  # Using standard model for stability
+                model=MaritacaModel.SABIAZINHO_3  # Using efficient model for cost optimization
             )
     return maritaca_client
 
@@ -128,7 +128,7 @@ async def process_with_maritaca(message: str, intent_type: IntentType, session_i
                 return {
                     "message": response.content if hasattr(response, 'content') else str(response),
                     "agent_used": "maritaca_ai",
-                    "model": response.model if hasattr(response, 'model') else "sabia-3",
+                    "model": response.model if hasattr(response, 'model') else "sabiazinho-3",
                     "success": True
                 }
         except Exception as e:
@@ -143,7 +143,7 @@ async def process_with_maritaca(message: str, intent_type: IntentType, session_i
                     headers={"authorization": f"Bearer {os.getenv('MARITACA_API_KEY')}"},
                     json={
                         "messages": [{"role": "user", "content": message}],
-                        "model": "sabia-3",
+                        "model": "sabiazinho-3",
                         "temperature": 0.7
                     }
                 )
@@ -152,7 +152,7 @@ async def process_with_maritaca(message: str, intent_type: IntentType, session_i
                     return {
                         "message": data.get("answer", get_fallback_response(intent_type)),
                         "agent_used": "maritaca_direct",
-                        "model": "sabia-3",
+                        "model": "sabiazinho-3",
                         "success": True
                     }
         except Exception as e:

src/core/config.py

@@ -114,8 +114,8 @@ class Settings(BaseSettings):
         description="Maritaca AI base URL"
     )
     maritaca_model: str = Field(
-        default="sabia-3",
-        description="Default Maritaca AI model (sabia-3, sabia-3-medium, sabia-3-large)"
+        default="sabiazinho-3",
+        description="Default Maritaca AI model (sabiazinho-3, sabia-3, sabia-3-medium, sabia-3-large)"
     )
     
     # Vector Store

src/services/maritaca_client.py

@@ -80,7 +80,7 @@ class MaritacaClient:
         self,
         api_key: str,
         base_url: str = "https://chat.maritaca.ai/api",
-        model: str = MaritacaModel.SABIA_3,
+        model: str = MaritacaModel.SABIAZINHO_3,
         timeout: int = 60,
         max_retries: int = 3,
         circuit_breaker_threshold: int = 5,
@@ -562,7 +562,7 @@ class MaritacaClient:
 # Factory function for easy client creation
 def create_maritaca_client(
     api_key: str,
-    model: str = MaritacaModel.SABIA_3,
+    model: str = MaritacaModel.SABIAZINHO_3,
     **kwargs
 ) -> MaritacaClient:
     """