Update bs/balance_sheet_generator.py

bs/balance_sheet_generator.py

@@ -179,7 +179,7 @@ Return ONLY this JSON format:
         }
         
         payload = {
-            "model": "anthropic/claude-3.5-sonnet",
+            "model": "mistralai/mixtral-8x7b-instruct",
             "messages": [{"role": "user", "content": prompt}],
             "temperature": 0.1,
             "max_tokens": 4000