def simulate_get_tiered_model(tier, mock_store):
    mapping = {
        "powerful": "LLM_MODEL_POWERFUL",
        "fast": "LLM_MODEL_FAST",
        "free": "LLM_MODEL_FREE"
    }
    prop_key = mapping.get(tier.lower(), "LLM_MODEL_TEXT")
    return mock_store.get(prop_key, "gpt-3.5-turbo") # Default

if __name__ == "__main__":
    mock_store = {
        "LLM_MODEL_POWERFUL": "claude-3-opus",
        "LLM_MODEL_FAST": "gpt-4o-mini"
    }
    
    print("--- Test: Tier Resolution ---")
    m1 = simulate_get_tiered_model("powerful", mock_store)
    m2 = simulate_get_tiered_model("fast", mock_store)
    m3 = simulate_get_tiered_model("free", mock_store) # Not in store
    
    print(f"Powerful: {m1}")
    print(f"Fast: {m2}")
    print(f"Free (Default): {m3}")
    
    status = "PASS" if m1 == "claude-3-opus" and m2 == "gpt-4o-mini" and m3 == "gpt-3.5-turbo" else "FAIL"
    print(f"\nFinal Status: {status}")