Create Use free models

Use free models

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+# Alternative: Use free models
+from transformers import pipeline
+
+class FreeCoderAgent:
+    def __init__(self):
+        self.generator = pipeline(
+            "text-generation", 
+            model="codellama/CodeLlama-7b-hf"
+        )
+    
+    def generate_code(self, prompt):
+        result = self.generator(f"Write Python code: {prompt}", max_length=200)
+        return result[0]['generated_text']