update sentiment_tool.py

tools/sentiment_tool.py

@@ -59,7 +59,7 @@ You are a crypto sentiment analyst. Based on the following headlines and Reddit
  {combined_text}
  """
             completion = client.chat.completions.create(
-                model="gpt-5-mini",
+                model="gpt-4.1",
                 messages=[
                     {"role": "system", "content": "You are a precise sentiment classifier."},
                     {"role": "user", "content": sentiment_prompt}