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app.py

@@ -267,11 +267,18 @@ def solve(
             pos = full_text.rfind(prompt)
             completion = full_text[pos + len(prompt):] if pos != -1 else full_text
         completion = strip_after_stop_text(completion, STOP_STRINGS)
-        return completion.strip()
+        return _clean(completion)
 
     # Raw mode: return the full continued expression.
     completion = strip_after_stop_text(full_text, STOP_STRINGS)
-    return completion.strip()
+    return _clean(completion)
+
+
+def _clean(text: str) -> str:
+    """Display-only cleanup: drop the training-artifact `/no think` control
+    marker the model sometimes appends. Does not affect generation."""
+    text = strip_after_stop_text(text, [NO_THINK])
+    return text.strip()
 
 
 CSS = """